12111019974 has 24 divisors (see below), whose sum is σ = 26447166720. Its totient is φ = 4005218448.

The previous prime is 12111019967. The next prime is 12111019993. The reversal of 12111019974 is 47991011121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2646669 + ... + 2651240.

It is an arithmetic number, because the mean of its divisors is an integer number (1101965280).

Almost surely, 2^12111019974 is an apocalyptic number.

12111019974 is an abundant number, since it is smaller than the sum of its proper divisors (14336146746).

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

12111019974 is a wasteful number, since it uses less digits than its factorization.

12111019974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5298044 (or 5298041 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The spelling of 12111019974 in words is "twelve billion, one hundred eleven million, nineteen thousand, nine hundred seventy-four".