13221121231010 has 64 divisors (see below), whose sum is σ = 30960267669504. Its totient is φ = 3941700734400.

The previous prime is 13221121231001. The next prime is 13221121231027. The reversal of 13221121231010 is 1013212112231.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373249406 + ... + 373284825.

It is an arithmetic number, because the mean of its divisors is an integer number (483754182336).

Almost surely, 2^{13221121231010} is an apocalyptic number.

13221121231010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13221121231010 is an abundant number, since it is smaller than the sum of its proper divisors (17739146438494).

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

13221121231010 is a wasteful number, since it uses less digits than its factorization.

13221121231010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746534279.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13221121231010 its reverse (1013212112231), we get a palindrome (14234333343241).

The spelling of 13221121231010 in words is "thirteen trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred thirty-one thousand, ten".