111102121009 has 32 divisors (see below), whose sum is σ = 126330969600. Its totient is φ = 96783671040.

The previous prime is 111102120991. The next prime is 111102121021. The reversal of 111102121009 is 900121201111.

It is a cyclic number.

It is not a de Polignac number, because 111102121009 - 2⁷ = 111102120881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111102121409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24166099 + ... + 24170695.

It is an arithmetic number, because the mean of its divisors is an integer number (3947842800).

Almost surely, 2^111102121009 is an apocalyptic number.

It is an amenable number.

111102121009 is a deficient number, since it is larger than the sum of its proper divisors (15228848591).

111102121009 is a wasteful number, since it uses less digits than its factorization.

111102121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 111102121009 in words is "one hundred eleven billion, one hundred two million, one hundred twenty-one thousand, nine".