21313232132112 has 80 divisors (see below), whose sum is σ = 61178337788160. Its totient is φ = 7104240259200.

The previous prime is 21313232132107. The next prime is 21313232132147. The reversal of 21313232132112 is 21123123231312.

21313232132112 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 3 + 2 + 321 + 321 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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 15 ways as a sum of consecutive naturals, for example, 18118537 + ... + 19258967.

It is an arithmetic number, because the mean of its divisors is an integer number (764729222352).

Almost surely, 2^{21313232132112} is an apocalyptic number.

It is an amenable number.

21313232132112 is an abundant number, since it is smaller than the sum of its proper divisors (39865105656048).

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

21313232132112 is a wasteful number, since it uses less digits than its factorization.

21313232132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183709 (or 1183697 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 21313232132112 its reverse (21123123231312), we get a palindrome (42436355363424).

The spelling of 21313232132112 in words is "twenty-one trillion, three hundred thirteen billion, two hundred thirty-two million, one hundred thirty-two thousand, one hundred twelve".