23312032121 has 16 divisors (see below), whose sum is σ = 28504306560. Its totient is φ = 18619735680.

The previous prime is 23312032091. The next prime is 23312032157. The reversal of 23312032121 is 12123021332.

It is not a de Polignac number, because 23312032121 - 2⁶ = 23312032057 is a prime.

It is a super-2 number, since 2×23312032121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23312032093 and 23312032102.

It is not an unprimeable number, because it can be changed into a prime (23312032021) 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, 1428596 + ... + 1444821.

It is an arithmetic number, because the mean of its divisors is an integer number (1781519160).

Almost surely, 2^23312032121 is an apocalyptic number.

It is an amenable number.

23312032121 is a deficient number, since it is larger than the sum of its proper divisors (5192274439).

23312032121 is a wasteful number, since it uses less digits than its factorization.

23312032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873504.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23312032121 its reverse (12123021332), we get a palindrome (35435053453).

The spelling of 23312032121 in words is "twenty-three billion, three hundred twelve million, thirty-two thousand, one hundred twenty-one".