111122012021 has 8 divisors (see below), whose sum is σ = 116195489280. Its totient is φ = 106068708592.

The previous prime is 111122012009. The next prime is 111122012033. The reversal of 111122012021 is 120210221111.

It is an interprime number because it is at equal distance from previous prime (111122012009) and next prime (111122012033).

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-111122012021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111122011987 and 111122012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122012081) 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, 5032190 + ... + 5054223.

It is an arithmetic number, because the mean of its divisors is an integer number (14524436160).

Almost surely, 2^111122012021 is an apocalyptic number.

It is an amenable number.

111122012021 is a deficient number, since it is larger than the sum of its proper divisors (5073477259).

111122012021 is a wasteful number, since it uses less digits than its factorization.

111122012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10086915.

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

Adding to 111122012021 its reverse (120210221111), we get a palindrome (231332233132).

The spelling of 111122012021 in words is "one hundred eleven billion, one hundred twenty-two million, twelve thousand, twenty-one".