23213033121 has 16 divisors (see below), whose sum is σ = 31586262336. Its totient is φ = 15158534976.

The previous prime is 23213033069. The next prime is 23213033131. The reversal of 23213033121 is 12133031232.

It is not a de Polignac number, because 23213033121 - 2¹³ = 23213024929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23213033131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21615 + ... + 216548.

It is an arithmetic number, because the mean of its divisors is an integer number (1974141396).

Almost surely, 2^23213033121 is an apocalyptic number.

It is an amenable number.

23213033121 is a deficient number, since it is larger than the sum of its proper divisors (8373229215).

23213033121 is a wasteful number, since it uses less digits than its factorization.

23213033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238832.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23213033121 its reverse (12133031232), we get a palindrome (35346064353).

The spelling of 23213033121 in words is "twenty-three billion, two hundred thirteen million, thirty-three thousand, one hundred twenty-one".