23007772121 has 4 divisors (see below), whose sum is σ = 23009387700. Its totient is φ = 23006156544.

The previous prime is 23007772043. The next prime is 23007772133. The reversal of 23007772121 is 12127770032.

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 7714987225 + 15292784896 = 87835^2 + 123664^2 .

It is a cyclic number.

It is not a de Polignac number, because 23007772121 - 2²⁶ = 22940663257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23007775121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786236 + ... + 814973.

It is an arithmetic number, because the mean of its divisors is an integer number (5752346925).

Almost surely, 2^23007772121 is an apocalyptic number.

It is an amenable number.

23007772121 is a deficient number, since it is larger than the sum of its proper divisors (1615579).

23007772121 is a wasteful number, since it uses less digits than its factorization.

23007772121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615578.

The product of its (nonzero) digits is 8232, while the sum is 32.

The spelling of 23007772121 in words is "twenty-three billion, seven million, seven hundred seventy-two thousand, one hundred twenty-one".