22112002121 has 16 divisors (see below), whose sum is σ = 24965480448. Its totient is φ = 19402467600.

The previous prime is 22112002109. The next prime is 22112002139. The reversal of 22112002121 is 12120021122.

It is a cyclic number.

It is not a de Polignac number, because 22112002121 - 2³⁴ = 4932132937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22112002096 and 22112002105.

It is not an unprimeable number, because it can be changed into a prime (22112002021) 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, 45950 + ... + 215256.

It is an arithmetic number, because the mean of its divisors is an integer number (1560342528).

Almost surely, 2^22112002121 is an apocalyptic number.

It is an amenable number.

22112002121 is a deficient number, since it is larger than the sum of its proper divisors (2853478327).

22112002121 is a wasteful number, since it uses less digits than its factorization.

22112002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169732.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22112002121 its reverse (12120021122), we get a palindrome (34232023243).

The spelling of 22112002121 in words is "twenty-two billion, one hundred twelve million, two thousand, one hundred twenty-one".