12001172364 has 36 divisors (see below), whose sum is σ = 30445839424. Its totient is φ = 3985945632.

The previous prime is 12001172363. The next prime is 12001172377. The reversal of 12001172364 is 46327110021.

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

It is a super-2 number, since 2×12001172364² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12001172363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591772 + ... + 611715.

Almost surely, 2^12001172364 is an apocalyptic number.

It is an amenable number.

12001172364 is an abundant number, since it is smaller than the sum of its proper divisors (18444667060).

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

12001172364 is a wasteful number, since it uses less digits than its factorization.

12001172364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203774 (or 1203769 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

Adding to 12001172364 its reverse (46327110021), we get a palindrome (58328282385).

The spelling of 12001172364 in words is "twelve billion, one million, one hundred seventy-two thousand, three hundred sixty-four".