13333121220 has 24 divisors (see below), whose sum is σ = 37332739584. Its totient is φ = 3555498976.

The previous prime is 13333121189. The next prime is 13333121251. The reversal of 13333121220 is 2212133331.

It is an interprime number because it is at equal distance from previous prime (13333121189) and next prime (13333121251).

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, 111109284 + ... + 111109403.

It is an arithmetic number, because the mean of its divisors is an integer number (1555530816).

Almost surely, 2^13333121220 is an apocalyptic number.

13333121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13333121220 is an abundant number, since it is smaller than the sum of its proper divisors (23999618364).

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

13333121220 is a wasteful number, since it uses less digits than its factorization.

13333121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222218699 (or 222218697 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13333121220 its reverse (2212133331), we get a palindrome (15545254551).

The spelling of 13333121220 in words is "thirteen billion, three hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty".