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20010012222 = 2319891972207
BaseRepresentation
bin10010101000101100…
…001000111000111110
31220122112100221102210
4102220230020320332
5311440030342342
613105324001250
71305603204024
oct225054107076
956575327383
1020010012222
118539148392
123a65390226
131b6b7a1c25
14d7b770714
157c1a9779c
hex4a8b08e3e

20010012222 has 32 divisors (see below), whose sum is σ = 42599692800. Its totient is φ = 6247948608.

The previous prime is 20010012221. The next prime is 20010012293. The reversal of 20010012222 is 22221001002.

It is a junction number, because it is equal to n+sod(n) for n = 20010012198 and 20010012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010012221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975958 + ... + 996249.

It is an arithmetic number, because the mean of its divisors is an integer number (1331240400).

Almost surely, 220010012222 is an apocalyptic number.

20010012222 is an abundant number, since it is smaller than the sum of its proper divisors (22589680578).

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

20010012222 is a wasteful number, since it uses less digits than its factorization.

20010012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972320.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20010012222 its reverse (22221001002), we get a palindrome (42231013224).

The spelling of 20010012222 in words is "twenty billion, ten million, twelve thousand, two hundred twenty-two".

Divisors: 1 2 3 6 19 38 57 89 114 178 267 534 1691 3382 5073 10146 1972207 3944414 5916621 11833242 37471933 74943866 112415799 175526423 224831598 351052846 526579269 1053158538 3335002037 6670004074 10005006111 20010012222