23202112009 has 2 divisors, whose sum is σ = 23202112010. Its totient is φ = 23202112008.

The previous prime is 23202111973. The next prime is 23202112049. The reversal of 23202112009 is 90021120232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16246051600 + 6956060409 = 127460^2 + 83403^2 .

It is a cyclic number.

It is not a de Polignac number, because 23202112009 - 2²³ = 23193723401 is a prime.

It is not a weakly prime, because it can be changed into another prime (23202112049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11601056004 + 11601056005.

It is an arithmetic number, because the mean of its divisors is an integer number (11601056005).

Almost surely, 2^23202112009 is an apocalyptic number.

It is an amenable number.

23202112009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23202112009 is an equidigital number, since it uses as much as digits as its factorization.

23202112009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 23202112009 in words is "twenty-three billion, two hundred two million, one hundred twelve thousand, nine".