11972292012 has 18 divisors (see below), whose sum is σ = 30263293788. Its totient is φ = 3990763992.

The previous prime is 11972291971. The next prime is 11972292029. The reversal of 11972292012 is 21029227911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 332563667 = 11972292012 / (1 + 1 + 9 + 7 + 2 + 2 + 9 + 2 + 0 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166281798 + ... + 166281869.

Almost surely, 2^11972292012 is an apocalyptic number.

11972292012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11972292012 is an abundant number, since it is smaller than the sum of its proper divisors (18291001776).

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

11972292012 is a wasteful number, since it uses less digits than its factorization.

11972292012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332563677 (or 332563672 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 11972292012 in words is "eleven billion, nine hundred seventy-two million, two hundred ninety-two thousand, twelve".