21132301023 has 12 divisors (see below), whose sum is σ = 31234305960. Its totient is φ = 13760567856.

The previous prime is 21132300997. The next prime is 21132301037. The reversal of 21132301023 is 32010323112.

It is a de Polignac number, because none of the positive numbers 2^k-21132301023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21132300987 and 21132301005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132341023) 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, 27302328 + ... + 27303101.

It is an arithmetic number, because the mean of its divisors is an integer number (2602858830).

Almost surely, 2^21132301023 is an apocalyptic number.

21132301023 is a deficient number, since it is larger than the sum of its proper divisors (10102004937).

21132301023 is a wasteful number, since it uses less digits than its factorization.

21132301023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54605478 (or 54605475 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21132301023 its reverse (32010323112), we get a palindrome (53142624135).

The spelling of 21132301023 in words is "twenty-one billion, one hundred thirty-two million, three hundred one thousand, twenty-three".