13501222100 has 36 divisors (see below), whose sum is σ = 30012237948. Its totient is φ = 5268768000.

The previous prime is 13501222079. The next prime is 13501222139. The reversal of 13501222100 is 122210531.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1421893264 + 12079328836 = 37708^2 + 109906^2 .

It is a congruent number.

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, 1642391 + ... + 1650590.

Almost surely, 2^13501222100 is an apocalyptic number.

13501222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13501222100 is an abundant number, since it is smaller than the sum of its proper divisors (16511015848).

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

13501222100 is a wasteful number, since it uses less digits than its factorization.

13501222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293036 (or 3293029 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 13501222100 its reverse (122210531), we get a palindrome (13623432631).

The spelling of 13501222100 in words is "thirteen billion, five hundred one million, two hundred twenty-two thousand, one hundred".