23321121011021 has 4 divisors (see below), whose sum is σ = 23337105331200. Its totient is φ = 23305136690844.

The previous prime is 23321121010973. The next prime is 23321121011063. The reversal of 23321121011021 is 12011012112332.

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 23321121011021 - 2¹⁰ = 23321121009997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23321121010984 and 23321121011002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321121011621) 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, 7992157901 + ... + 7992160818.

It is an arithmetic number, because the mean of its divisors is an integer number (5834276332800).

Almost surely, 2^{23321121011021} is an apocalyptic number.

It is an amenable number.

23321121011021 is a deficient number, since it is larger than the sum of its proper divisors (15984320179).

23321121011021 is a wasteful number, since it uses less digits than its factorization.

23321121011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15984320178.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 23321121011021 its reverse (12011012112332), we get a palindrome (35332133123353).

The spelling of 23321121011021 in words is "twenty-three trillion, three hundred twenty-one billion, one hundred twenty-one million, eleven thousand, twenty-one".