22122002210121 has 24 divisors (see below), whose sum is σ = 34859122394304. Its totient is φ = 13407193366560.

The previous prime is 22122002210117. The next prime is 22122002210129. The reversal of 22122002210121 is 12101220022122.

It is a happy number.

22122002210121 is a `hidden beast` number, since 221 + 2 + 200 + 221 + 0 + 1 + 21 = 666.

It is not a de Polignac number, because 22122002210121 - 2² = 22122002210117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122002210094 and 22122002210103.

It is not an unprimeable number, because it can be changed into a prime (22122002210129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18647115 + ... + 19797951.

It is an arithmetic number, because the mean of its divisors is an integer number (1452463433096).

Almost surely, 2^{22122002210121} is an apocalyptic number.

It is an amenable number.

22122002210121 is a deficient number, since it is larger than the sum of its proper divisors (12737120184183).

22122002210121 is a wasteful number, since it uses less digits than its factorization.

22122002210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345021 (or 1345018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22122002210121 its reverse (12101220022122), we get a palindrome (34223222232243).

It can be divided in two parts, 221220022101 and 21, that added together give a palindrome (221220022122).

The spelling of 22122002210121 in words is "twenty-two trillion, one hundred twenty-two billion, two million, two hundred ten thousand, one hundred twenty-one".