21100132310323 has 12 divisors (see below), whose sum is σ = 23210452583640. Its totient is φ = 19167262009280.

The previous prime is 21100132310267. The next prime is 21100132310429. The reversal of 21100132310323 is 32301323100112.

It is a de Polignac number, because none of the positive numbers 2^k-21100132310323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21100132310294 and 21100132310303.

It is not an unprimeable number, because it can be changed into a prime (21100132310123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66552358 + ... + 66868651.

It is an arithmetic number, because the mean of its divisors is an integer number (1934204381970).

Almost surely, 2^{21100132310323} is an apocalyptic number.

21100132310323 is a deficient number, since it is larger than the sum of its proper divisors (2110320273317).

21100132310323 is a wasteful number, since it uses less digits than its factorization.

21100132310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133422338 (or 133422327 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21100132310323 its reverse (32301323100112), we get a palindrome (53401455410435).

The spelling of 21100132310323 in words is "twenty-one trillion, one hundred billion, one hundred thirty-two million, three hundred ten thousand, three hundred twenty-three".