21132023112 has 48 divisors (see below), whose sum is σ = 57375365580. Its totient is φ = 7026432000.

The previous prime is 21132023093. The next prime is 21132023161.

21132023112 is a `hidden beast` number, since 211 + 320 + 23 + 112 = 666.

21132023112 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 19643143716 + 1488879396 = 140154^2 + 38586^2 .

It is a super-2 number, since 2×21132023112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337089 + ... + 394832.

Almost surely, 2^21132023112 is an apocalyptic number.

It is an amenable number.

21132023112 is an abundant number, since it is smaller than the sum of its proper divisors (36243342468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21132023112 is a wasteful number, since it uses less digits than its factorization.

21132023112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732334 (or 732327 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

It can be divided in two parts, 211320 and 23112, that added together give a palindrome (234432).

The spelling of 21132023112 in words is "twenty-one billion, one hundred thirty-two million, twenty-three thousand, one hundred twelve".