23211202131989 has 2 divisors, whose sum is σ = 23211202131990. Its totient is φ = 23211202131988.

The previous prime is 23211202131983. The next prime is 23211202132007. The reversal of 23211202131989 is 98913120211232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13777347886225 + 9433854245764 = 3711785^2 + 3071458^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211202131989 - 2⁴ = 23211202131973 is a prime.

It is a super-2 number, since 2×23211202131989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211202131983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605601065994 + 11605601065995.

It is an arithmetic number, because the mean of its divisors is an integer number (11605601065995).

Almost surely, 2^{23211202131989} is an apocalyptic number.

It is an amenable number.

23211202131989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211202131989 is an equidigital number, since it uses as much as digits as its factorization.

23211202131989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 23211202131989 in words is "twenty-three trillion, two hundred eleven billion, two hundred two million, one hundred thirty-one thousand, nine hundred eighty-nine".