13021232244400 has 60 divisors (see below), whose sum is σ = 31813739515800. Its totient is φ = 5120213347840.

The previous prime is 13021232244379. The next prime is 13021232244401. The reversal of 13021232244400 is 444223212031.

It is a super-2 number, since 2×13021232244400² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13021232244401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275849965 + ... + 275897164.

It is an arithmetic number, because the mean of its divisors is an integer number (530228991930).

Almost surely, 2^{13021232244400} is an apocalyptic number.

13021232244400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021232244400 is an abundant number, since it is smaller than the sum of its proper divisors (18792507271400).

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

13021232244400 is a wasteful number, since it uses less digits than its factorization.

13021232244400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551747206 (or 551747195 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 13021232244400 its reverse (444223212031), we get a palindrome (13465455456431).

The spelling of 13021232244400 in words is "thirteen trillion, twenty-one billion, two hundred thirty-two million, two hundred forty-four thousand, four hundred".