101132431021 has 2 divisors, whose sum is σ = 101132431022. Its totient is φ = 101132431020.

The previous prime is 101132431009. The next prime is 101132431069. The reversal of 101132431021 is 120134231101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70974288100 + 30158142921 = 266410^2 + 173661^2 .

It is a cyclic number.

It is not a de Polignac number, because 101132431021 - 2⁵ = 101132430989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101132431021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101132431321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50566215510 + 50566215511.

It is an arithmetic number, because the mean of its divisors is an integer number (50566215511).

Almost surely, 2^101132431021 is an apocalyptic number.

It is an amenable number.

101132431021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101132431021 is an equidigital number, since it uses as much as digits as its factorization.

101132431021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101132431021 its reverse (120134231101), we get a palindrome (221266662122).

The spelling of 101132431021 in words is "one hundred one billion, one hundred thirty-two million, four hundred thirty-one thousand, twenty-one".