111118463821 has 16 divisors (see below), whose sum is σ = 113762593728. Its totient is φ = 108502416000.

The previous prime is 111118463789. The next prime is 111118463837. The reversal of 111118463821 is 128364811111.

It is a cyclic number.

It is not a de Polignac number, because 111118463821 - 2⁵ = 111118463789 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 (111118463881) 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, 9410121 + ... + 9421921.

It is an arithmetic number, because the mean of its divisors is an integer number (7110162108).

Almost surely, 2^111118463821 is an apocalyptic number.

It is an amenable number.

111118463821 is a deficient number, since it is larger than the sum of its proper divisors (2644129907).

111118463821 is a wasteful number, since it uses less digits than its factorization.

111118463821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972.

The product of its digits is 9216, while the sum is 37.

The spelling of 111118463821 in words is "one hundred eleven billion, one hundred eighteen million, four hundred sixty-three thousand, eight hundred twenty-one".