21226526013312 has 96 divisors (see below), whose sum is σ = 64296357645000. Its totient is φ = 6703113470976.

The previous prime is 21226526013311. The next prime is 21226526013367. The reversal of 21226526013312 is 21331062562212.

21226526013312 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 6 + 5 + 2 + 601 + 33 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×21226526013312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21226526013311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484867687 + ... + 484911462.

Almost surely, 2^{21226526013312} is an apocalyptic number.

It is an amenable number.

21226526013312 is an abundant number, since it is smaller than the sum of its proper divisors (43069831631688).

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

21226526013312 is a wasteful number, since it uses less digits than its factorization.

21226526013312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969779188 (or 969779173 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 21226526013312 its reverse (21331062562212), we get a palindrome (42557588575524).

The spelling of 21226526013312 in words is "twenty-one trillion, two hundred twenty-six billion, five hundred twenty-six million, thirteen thousand, three hundred twelve".