111122102021 has 8 divisors (see below), whose sum is σ = 129698745600. Its totient is φ = 93220972848.

The previous prime is 111122101913. The next prime is 111122102023. The reversal of 111122102021 is 120201221111.

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-111122102021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111122101987 and 111122102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122102023) 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, 168878246 + ... + 168878903.

It is an arithmetic number, because the mean of its divisors is an integer number (16212343200).

Almost surely, 2^111122102021 is an apocalyptic number.

It is an amenable number.

111122102021 is a deficient number, since it is larger than the sum of its proper divisors (18576643579).

111122102021 is an equidigital number, since it uses as much as digits as its factorization.

111122102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337757203.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111122102021 its reverse (120201221111), we get a palindrome (231323323132).

The spelling of 111122102021 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred two thousand, twenty-one".