13220212220 has 24 divisors (see below), whose sum is σ = 27795969600. Its totient is φ = 5281699392.

The previous prime is 13220212219. The next prime is 13220212289. The reversal of 13220212220 is 2221202231.

It is a super-2 number, since 2×13220212220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 382100 + ... + 415259.

It is an arithmetic number, because the mean of its divisors is an integer number (1158165400).

Almost surely, 2^13220212220 is an apocalyptic number.

13220212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220212220 is an abundant number, since it is smaller than the sum of its proper divisors (14575757380).

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

13220212220 is a wasteful number, since it uses less digits than its factorization.

13220212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798197 (or 798195 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 13220212220 its reverse (2221202231), we get a palindrome (15441414451).

The spelling of 13220212220 in words is "thirteen billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty".