11612201172 has 48 divisors (see below), whose sum is σ = 31832052672. Its totient is φ = 3248167680.

The previous prime is 11612201149. The next prime is 11612201191. The reversal of 11612201172 is 27110221611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3381793 + ... + 3385224.

It is an arithmetic number, because the mean of its divisors is an integer number (663167764).

Almost surely, 2^11612201172 is an apocalyptic number.

11612201172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11612201172 is an abundant number, since it is smaller than the sum of its proper divisors (20219851500).

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

11612201172 is a wasteful number, since it uses less digits than its factorization.

11612201172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767048 (or 6767046 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 24.

Adding to 11612201172 its reverse (27110221611), we get a palindrome (38722422783).

The spelling of 11612201172 in words is "eleven billion, six hundred twelve million, two hundred one thousand, one hundred seventy-two".