21336522563312 has 40 divisors (see below), whose sum is σ = 45100441683120. Its totient is φ = 9697818977280.

The previous prime is 21336522563267. The next prime is 21336522563339.

It is a happy number.

21336522563312 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 894953 + ... + 6593480.

It is an arithmetic number, because the mean of its divisors is an integer number (1127511042078).

Almost surely, 2^{21336522563312} is an apocalyptic number.

21336522563312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21336522563312 is an abundant number, since it is smaller than the sum of its proper divisors (23763919119808).

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

21336522563312 is a wasteful number, since it uses less digits than its factorization.

21336522563312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504641 (or 7504635 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 44.

It can be divided in two parts, 2133652 and 2563312, that added together give a palindrome (4696964).

The spelling of 21336522563312 in words is "twenty-one trillion, three hundred thirty-six billion, five hundred twenty-two million, five hundred sixty-three thousand, three hundred twelve".