23132002221 has 64 divisors (see below), whose sum is σ = 39169267200. Its totient is φ = 13404238848.

The previous prime is 23132002217. The next prime is 23132002249. The reversal of 23132002221 is 12220023132.

It is not a de Polignac number, because 23132002221 - 2² = 23132002217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23132002194 and 23132002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132002261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 268375 + ... + 343931.

It is an arithmetic number, because the mean of its divisors is an integer number (612019800).

Almost surely, 2^23132002221 is an apocalyptic number.

It is an amenable number.

23132002221 is a deficient number, since it is larger than the sum of its proper divisors (16037264979).

23132002221 is a wasteful number, since it uses less digits than its factorization.

23132002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75635 (or 75629 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23132002221 its reverse (12220023132), we get a palindrome (35352025353).

The spelling of 23132002221 in words is "twenty-three billion, one hundred thirty-two million, two thousand, two hundred twenty-one".