13122231156 has 36 divisors (see below), whose sum is σ = 33182531200. Its totient is φ = 4372435728.

The previous prime is 13122231127. The next prime is 13122231169. The reversal of 13122231156 is 65113222131.

13122231156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13122231156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30855 + ... + 164913.

Almost surely, 2^13122231156 is an apocalyptic number.

It is an amenable number.

13122231156 is an abundant number, since it is smaller than the sum of its proper divisors (20060300044).

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

13122231156 is a wasteful number, since it uses less digits than its factorization.

13122231156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136788 (or 136783 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 13122231156 its reverse (65113222131), we get a palindrome (78235453287).

The spelling of 13122231156 in words is "thirteen billion, one hundred twenty-two million, two hundred thirty-one thousand, one hundred fifty-six".