23132110021 has 4 divisors (see below), whose sum is σ = 23670066112. Its totient is φ = 22594153932.

The previous prime is 23132110009. The next prime is 23132110039. The reversal of 23132110021 is 12001123132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23132110021 - 2⁹ = 23132109509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23132109977 and 23132110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132110081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268977981 + ... + 268978066.

It is an arithmetic number, because the mean of its divisors is an integer number (5917516528).

Almost surely, 2^23132110021 is an apocalyptic number.

It is an amenable number.

23132110021 is a deficient number, since it is larger than the sum of its proper divisors (537956091).

23132110021 is an equidigital number, since it uses as much as digits as its factorization.

23132110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537956090.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23132110021 its reverse (12001123132), we get a palindrome (35133233153).

The spelling of 23132110021 in words is "twenty-three billion, one hundred thirty-two million, one hundred ten thousand, twenty-one".