23240121104021 has 4 divisors (see below), whose sum is σ = 23240196835500. Its totient is φ = 23240045372544.

The previous prime is 23240121103949. The next prime is 23240121104033. The reversal of 23240121104021 is 12040112104232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21280230302500 + 1959890801521 = 4613050^2 + 1399961^2 .

It is a cyclic number.

It is not a de Polignac number, because 23240121104021 - 2⁴² = 18842074592917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240127104021) 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, 37403546 + ... + 38019803.

It is an arithmetic number, because the mean of its divisors is an integer number (5810049208875).

Almost surely, 2^{23240121104021} is an apocalyptic number.

It is an amenable number.

23240121104021 is a deficient number, since it is larger than the sum of its proper divisors (75731479).

23240121104021 is an equidigital number, since it uses as much as digits as its factorization.

23240121104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75731478.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 23240121104021 its reverse (12040112104232), we get a palindrome (35280233208253).

The spelling of 23240121104021 in words is "twenty-three trillion, two hundred forty billion, one hundred twenty-one million, one hundred four thousand, twenty-one".