21132111302 has 16 divisors (see below), whose sum is σ = 32248558080. Its totient is φ = 10382737992.

The previous prime is 21132111289. The next prime is 21132111311. The reversal of 21132111302 is 20311123112.

It is a super-2 number, since 2×21132111302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264863 + ... + 335285.

It is an arithmetic number, because the mean of its divisors is an integer number (2015534880).

Almost surely, 2^21132111302 is an apocalyptic number.

21132111302 is a deficient number, since it is larger than the sum of its proper divisors (11116446778).

21132111302 is a wasteful number, since it uses less digits than its factorization.

21132111302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73027.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21132111302 its reverse (20311123112), we get a palindrome (41443234414).

The spelling of 21132111302 in words is "twenty-one billion, one hundred thirty-two million, one hundred eleven thousand, three hundred two".