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BaseRepresentation
bin10100101100100010…
…101010100000111101
32010100200211201020022
4110230202222200331
5331002330333041
614113025101525
71414453624562
oct245442524075
963320751208
1022222121021
119473898481
1243821878a5
132131b82c49
14110b480869
158a0da724b
hex52c8aa83d

22222121021 has 8 divisors (see below), whose sum is σ = 22609972800. Its totient is φ = 21834642880.

The previous prime is 22222120997. The next prime is 22222121027. The reversal of 22222121021 is 12012122222.

Adding to 22222121021 its reverse (12012122222), we get a palindrome (34234243243).

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22222121021 - 226 = 22155012157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222121027) 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, 27941 + ... + 212661.

It is an arithmetic number, because the mean of its divisors is an integer number (2826246600).

Almost surely, 222222121021 is an apocalyptic number.

It is an amenable number.

22222121021 is a deficient number, since it is larger than the sum of its proper divisors (387851779).

22222121021 is a wasteful number, since it uses less digits than its factorization.

22222121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186819.

The product of its (nonzero) digits is 128, while the sum is 17.

The spelling of 22222121021 in words is "twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-one".