21326533562312 has 32 divisors (see below), whose sum is σ = 44445520212480. Its totient is φ = 9510975514560.

The previous prime is 21326533562263. The next prime is 21326533562317.

It is a happy number.

21326533562312 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (21326533562317) 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 7 ways as a sum of consecutive naturals, for example, 2286287528 + ... + 2286296855.

It is an arithmetic number, because the mean of its divisors is an integer number (1388922506640).

Almost surely, 2^{21326533562312} is an apocalyptic number.

21326533562312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21326533562312 is an abundant number, since it is smaller than the sum of its proper divisors (23118986650168).

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

21326533562312 is a wasteful number, since it uses less digits than its factorization.

21326533562312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572584453 (or 4572584449 counting only the distinct ones).

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

It can be divided in two parts, 2132653 and 3562312, that added together give a palindrome (5694965).

The spelling of 21326533562312 in words is "twenty-one trillion, three hundred twenty-six billion, five hundred thirty-three million, five hundred sixty-two thousand, three hundred twelve".