111091920101 has 16 divisors (see below), whose sum is σ = 114312767616. Its totient is φ = 107927400000.

The previous prime is 111091920083. The next prime is 111091920131. The reversal of 111091920101 is 101029190111.

It is a cyclic number.

It is not a de Polignac number, because 111091920101 - 2²² = 111087725797 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 (111091920131) 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, 1476371 + ... + 1549791.

It is an arithmetic number, because the mean of its divisors is an integer number (7144547976).

Almost surely, 2^111091920101 is an apocalyptic number.

It is an amenable number.

111091920101 is a deficient number, since it is larger than the sum of its proper divisors (3220847515).

111091920101 is a wasteful number, since it uses less digits than its factorization.

111091920101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73804.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 111091920101 in words is "one hundred eleven billion, ninety-one million, nine hundred twenty thousand, one hundred one".