111121011983 has 16 divisors (see below), whose sum is σ = 114647909376. Its totient is φ = 107640277920.

The previous prime is 111121011979. The next prime is 111121012021. The reversal of 111121011983 is 389110121111.

It is not a de Polignac number, because 111121011983 - 2² = 111121011979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121011923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2836910 + ... + 2875812.

It is an arithmetic number, because the mean of its divisors is an integer number (7165494336).

Almost surely, 2^111121011983 is an apocalyptic number.

111121011983 is a deficient number, since it is larger than the sum of its proper divisors (3526897393).

111121011983 is a wasteful number, since it uses less digits than its factorization.

111121011983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39494.

The product of its (nonzero) digits is 432, while the sum is 29.

The spelling of 111121011983 in words is "one hundred eleven billion, one hundred twenty-one million, eleven thousand, nine hundred eighty-three".