23132321121 has 16 divisors (see below), whose sum is σ = 37960732544. Its totient is φ = 12201663744.

The previous prime is 23132321111. The next prime is 23132321161. The reversal of 23132321121 is 12112323132.

It is not a de Polignac number, because 23132321121 - 2⁶ = 23132321057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23132321111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42366616 + ... + 42367161.

It is an arithmetic number, because the mean of its divisors is an integer number (2372545784).

Almost surely, 2^23132321121 is an apocalyptic number.

23132321121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23132321121 is a deficient number, since it is larger than the sum of its proper divisors (14828411423).

23132321121 is a wasteful number, since it uses less digits than its factorization.

23132321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84733800.

The product of its digits is 432, while the sum is 21.

Adding to 23132321121 its reverse (12112323132), we get a palindrome (35244644253).

The spelling of 23132321121 in words is "twenty-three billion, one hundred thirty-two million, three hundred twenty-one thousand, one hundred twenty-one".