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22020202020 = 2235367003367
BaseRepresentation
bin10100100000100000…
…011001111000100100
32002211121220011102210
4110200200121320210
5330044132431040
614041013203420
71406452425465
oct244040317044
962747804383
1022020202020
11937a914773
124326630570
1320cc0a634b
1410cc71cd6c
1588d2be480
hex520819e24

22020202020 has 24 divisors (see below), whose sum is σ = 61656565824. Its totient is φ = 5872053856.

The previous prime is 22020202013. The next prime is 22020202031. The reversal of 22020202020 is 2020202022.

It is a super-2 number, since 2×220202020202 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

22020202020 is a modest number, since divided by 202020 gives 22020 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22020201987 and 22020202005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183501624 + ... + 183501743.

It is an arithmetic number, because the mean of its divisors is an integer number (2569023576).

Almost surely, 222020202020 is an apocalyptic number.

22020202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020202020 is an abundant number, since it is smaller than the sum of its proper divisors (39636363804).

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

22020202020 is a wasteful number, since it uses less digits than its factorization.

22020202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367003379 (or 367003377 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 22020202020 its reverse (2020202022), we get a palindrome (24040404042).

The spelling of 22020202020 in words is "twenty-two billion, twenty million, two hundred two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 367003367 734006734 1101010101 1468013468 1835016835 2202020202 3670033670 4404040404 5505050505 7340067340 11010101010 22020202020