111386821121 has 8 divisors (see below), whose sum is σ = 113271583488. Its totient is φ = 109503954000.

The previous prime is 111386821097. The next prime is 111386821171. The reversal of 111386821121 is 121128683111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111386821121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111386821171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355025 + ... + 590606.

It is an arithmetic number, because the mean of its divisors is an integer number (14158947936).

Almost surely, 2^111386821121 is an apocalyptic number.

It is an amenable number.

111386821121 is a deficient number, since it is larger than the sum of its proper divisors (1884762367).

111386821121 is an equidigital number, since it uses as much as digits as its factorization.

111386821121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947623.

The product of its digits is 4608, while the sum is 35.

The spelling of 111386821121 in words is "one hundred eleven billion, three hundred eighty-six million, eight hundred twenty-one thousand, one hundred twenty-one".