22431002121 has 48 divisors (see below), whose sum is σ = 39394779840. Its totient is φ = 12121436160.

The previous prime is 22431002117. The next prime is 22431002123. The reversal of 22431002121 is 12120013422.

It is a happy number.

22431002121 is a `hidden beast` number, since 22 + 431 + 0 + 0 + 212 + 1 = 666.

It is not a de Polignac number, because 22431002121 - 2² = 22431002117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22431002094 and 22431002103.

It is not an unprimeable number, because it can be changed into a prime (22431002123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 318760 + ... + 382713.

It is an arithmetic number, because the mean of its divisors is an integer number (820724580).

Almost surely, 2^22431002121 is an apocalyptic number.

It is an amenable number.

22431002121 is a deficient number, since it is larger than the sum of its proper divisors (16963777719).

22431002121 is a wasteful number, since it uses less digits than its factorization.

22431002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701526 (or 701523 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22431002121 its reverse (12120013422), we get a palindrome (34551015543).

The spelling of 22431002121 in words is "twenty-two billion, four hundred thirty-one million, two thousand, one hundred twenty-one".