13112112100 has 18 divisors (see below), whose sum is σ = 28453283474. Its totient is φ = 5244844800.

The previous prime is 13112112071. The next prime is 13112112103. The reversal of 13112112100 is 121121131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4156896676 + 8955215424 = 64474^2 + 94632^2 .

It is not an unprimeable number, because it can be changed into a prime (13112112103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65560461 + ... + 65560660.

Almost surely, 2^13112112100 is an apocalyptic number.

13112112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13112112100 is an abundant number, since it is smaller than the sum of its proper divisors (15341171374).

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

13112112100 is a wasteful number, since it uses less digits than its factorization.

13112112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131121135 (or 131121128 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 13112112100 its reverse (121121131), we get a palindrome (13233233231).

The spelling of 13112112100 in words is "thirteen billion, one hundred twelve million, one hundred twelve thousand, one hundred".