21314043312 has 40 divisors (see below), whose sum is σ = 55167027120. Its totient is φ = 7091036160.

The previous prime is 21314043293. The next prime is 21314043329. The reversal of 21314043312 is 21334041312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401137 + ... + 451152.

It is an arithmetic number, because the mean of its divisors is an integer number (1379175678).

Almost surely, 2^21314043312 is an apocalyptic number.

It is an amenable number.

21314043312 is an abundant number, since it is smaller than the sum of its proper divisors (33852983808).

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

21314043312 is a wasteful number, since it uses less digits than its factorization.

21314043312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852821 (or 852815 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21314043312 its reverse (21334041312), we get a palindrome (42648084624).

The spelling of 21314043312 in words is "twenty-one billion, three hundred fourteen million, forty-three thousand, three hundred twelve".