111819317012 has 24 divisors (see below), whose sum is σ = 210769360872. Its totient is φ = 51600844800.

The previous prime is 111819317003. The next prime is 111819317023. The reversal of 111819317012 is 210713918111.

It can be written as a sum of positive squares in 4 ways, for example, as 2440952836 + 109378364176 = 49406^2 + 330724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174212 + ... + 503972.

It is an arithmetic number, because the mean of its divisors is an integer number (8782056703).

Almost surely, 2^111819317012 is an apocalyptic number.

It is an amenable number.

111819317012 is a deficient number, since it is larger than the sum of its proper divisors (98950043860).

111819317012 is a wasteful number, since it uses less digits than its factorization.

111819317012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336299 (or 336297 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 35.

The spelling of 111819317012 in words is "one hundred eleven billion, eight hundred nineteen million, three hundred seventeen thousand, twelve".