21012321200112 has 120 divisors (see below), whose sum is σ = 65885071203120. Its totient is φ = 6195278960640.

The previous prime is 21012321200077. The next prime is 21012321200137. The reversal of 21012321200112 is 21100212321012.

21012321200112 is a `hidden beast` number, since 21 + 0 + 12 + 321 + 200 + 112 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179202937 + ... + 179320152.

It is an arithmetic number, because the mean of its divisors is an integer number (549042260026).

Almost surely, 2^{21012321200112} is an apocalyptic number.

21012321200112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21012321200112 is an abundant number, since it is smaller than the sum of its proper divisors (44872750003008).

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

21012321200112 is a wasteful number, since it uses less digits than its factorization.

21012321200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358523151 (or 358523142 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21012321200112 its reverse (21100212321012), we get a palindrome (42112533521124).

The spelling of 21012321200112 in words is "twenty-one trillion, twelve billion, three hundred twenty-one million, two hundred thousand, one hundred twelve".