21042314244 has 96 divisors (see below), whose sum is σ = 65058416640. Its totient is φ = 5750689824.

The previous prime is 21042314191. The next prime is 21042314263. The reversal of 21042314244 is 44241324012.

21042314244 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 231 + 424 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587694 + ... + 622469.

It is an arithmetic number, because the mean of its divisors is an integer number (677691840).

Almost surely, 2^21042314244 is an apocalyptic number.

It is an amenable number.

21042314244 is an abundant number, since it is smaller than the sum of its proper divisors (44016102396).

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

21042314244 is a wasteful number, since it uses less digits than its factorization.

21042314244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210206 (or 1210198 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21042314244 its reverse (44241324012), we get a palindrome (65283638256).

The spelling of 21042314244 in words is "twenty-one billion, forty-two million, three hundred fourteen thousand, two hundred forty-four".