12201190956 has 72 divisors (see below), whose sum is σ = 31110285024. Its totient is φ = 4031758080.

The previous prime is 12201190877. The next prime is 12201190957. The reversal of 12201190956 is 65909110221.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12201190956.

It is not an unprimeable number, because it can be changed into a prime (12201190957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5034361 + ... + 5036783.

It is an arithmetic number, because the mean of its divisors is an integer number (432087292).

Almost surely, 2^12201190956 is an apocalyptic number.

It is an amenable number.

12201190956 is an abundant number, since it is smaller than the sum of its proper divisors (18909094068).

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

12201190956 is a wasteful number, since it uses less digits than its factorization.

12201190956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The spelling of 12201190956 in words is "twelve billion, two hundred one million, one hundred ninety thousand, nine hundred fifty-six".