13220112100 has 36 divisors (see below), whose sum is σ = 30894388084. Its totient is φ = 4881271680.

The previous prime is 13220112083. The next prime is 13220112127. The reversal of 13220112100 is 121102231.

It can be written as a sum of positive squares in 6 ways, for example, as 1144739556 + 12075372544 = 33834^2 + 109888^2 .

It is a super-3 number, since 3×13220112100³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5083359 + ... + 5085958.

Almost surely, 2^13220112100 is an apocalyptic number.

13220112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220112100 is an abundant number, since it is smaller than the sum of its proper divisors (17674275984).

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

13220112100 is a wasteful number, since it uses less digits than its factorization.

13220112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10169344 (or 10169337 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 13220112100 its reverse (121102231), we get a palindrome (13341214331).

The spelling of 13220112100 in words is "thirteen billion, two hundred twenty million, one hundred twelve thousand, one hundred".