21134244344200 has 48 divisors (see below), whose sum is σ = 52916896422180. Its totient is φ = 7803413295360.

The previous prime is 21134244344149. The next prime is 21134244344201. The reversal of 21134244344200 is 244344243112.

It can be written as a sum of positive squares in 6 ways, for example, as 11527505267524 + 9606739076676 = 3395218^2 + 3099474^2 .

It is not an unprimeable number, because it can be changed into a prime (21134244344201) 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, 4064275159 + ... + 4064280358.

Almost surely, 2^{21134244344200} is an apocalyptic number.

21134244344200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21134244344200 is an abundant number, since it is smaller than the sum of its proper divisors (31782652077980).

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

21134244344200 is a wasteful number, since it uses less digits than its factorization.

21134244344200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128555546 (or 8128555537 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 21134244344200 its reverse (244344243112), we get a palindrome (21378588587312).

The spelling of 21134244344200 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred forty-four million, three hundred forty-four thousand, two hundred".