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212220221102020 = 22571149450859931
BaseRepresentation
bin110000010000001101011110…
…111001001001011111000100
31000211102001111002120021001201
4300100031132321021133010
5210304004003100231040
62031204342414032244
762462255625654325
oct6020153671113704
91024361432507051
10212220221102020
11616900aa27360a
121b97584a7a8684
13915538640a751
143a597290c244c
1519805057c6a9a
hexc1035ee497c4

212220221102020 has 24 divisors (see below), whose sum is σ = 451939400434368. Its totient is φ = 83692481560800.

The previous prime is 212220221102017. The next prime is 212220221102023. The reversal of 212220221102020 is 20201122022212.

It is an interprime number because it is at equal distance from previous prime (212220221102017) and next prime (212220221102023).

It is a super-3 number, since 3×2122202211020203 (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (212220221102023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74725428546 + ... + 74725431385.

It is an arithmetic number, because the mean of its divisors is an integer number (18830808351432).

Almost surely, 2212220221102020 is an apocalyptic number.

212220221102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220221102020 is an abundant number, since it is smaller than the sum of its proper divisors (239719179332348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212220221102020 is a wasteful number, since it uses less digits than its factorization.

212220221102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149450860011 (or 149450860009 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212220221102020 its reverse (20201122022212), we get a palindrome (232421343124232).

The spelling of 212220221102020 in words is "two hundred twelve trillion, two hundred twenty billion, two hundred twenty-one million, one hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 149450859931 298901719862 597803439724 747254299655 1494508599310 2989017198620 10611011055101 21222022110202 42444044220404 53055055275505 106110110551010 212220221102020