21344522544312 has 32 divisors (see below), whose sum is σ = 58212334212480. Its totient is φ = 6468037134560.

The previous prime is 21344522544311. The next prime is 21344522544329.

21344522544312 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344522544311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40425231828 + ... + 40425232355.

It is an arithmetic number, because the mean of its divisors is an integer number (1819135444140).

Almost surely, 2^{21344522544312} is an apocalyptic number.

21344522544312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21344522544312 is an abundant number, since it is smaller than the sum of its proper divisors (36867811668168).

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

21344522544312 is a wasteful number, since it uses less digits than its factorization.

21344522544312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80850464203 (or 80850464199 counting only the distinct ones).

The product of its digits is 921600, while the sum is 42.

It can be divided in two parts, 2134452 and 2544312, that added together give a palindrome (4678764).

The spelling of 21344522544312 in words is "twenty-one trillion, three hundred forty-four billion, five hundred twenty-two million, five hundred forty-four thousand, three hundred twelve".