21122044313320 has 32 divisors (see below), whose sum is σ = 48683736286920. Its totient is φ = 8242748999680.

The previous prime is 21122044313263. The next prime is 21122044313339. The reversal of 21122044313320 is 2331344022112.

It can be written as a sum of positive squares in 4 ways, for example, as 15072579404964 + 6049464908356 = 3882342^2 + 2459566^2 .

It is a super-2 number, since 2×21122044313320² (a number of 27 digits) contains 22 as substring.

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, 6439646017 + ... + 6439649296.

Almost surely, 2^{21122044313320} is an apocalyptic number.

21122044313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122044313320 is an abundant number, since it is smaller than the sum of its proper divisors (27561691973600).

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

21122044313320 is a wasteful number, since it uses less digits than its factorization.

21122044313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12879295365 (or 12879295361 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21122044313320 its reverse (2331344022112), we get a palindrome (23453388335432).

The spelling of 21122044313320 in words is "twenty-one trillion, one hundred twenty-two billion, forty-four million, three hundred thirteen thousand, three hundred twenty".