111022111200021 has 48 divisors (see below), whose sum is σ = 173142356859648. Its totient is φ = 63093824640000.

The previous prime is 111022111199969. The next prime is 111022111200101. The reversal of 111022111200021 is 120002111220111.

It is a happy number.

It is not a de Polignac number, because 111022111200021 - 2⁶ = 111022111199957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022110200021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24519241 + ... + 28692113.

It is an arithmetic number, because the mean of its divisors is an integer number (3607132434576).

Almost surely, 2^{111022111200021} is an apocalyptic number.

It is an amenable number.

111022111200021 is a deficient number, since it is larger than the sum of its proper divisors (62120245659627).

111022111200021 is a wasteful number, since it uses less digits than its factorization.

111022111200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173882 (or 4173875 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111022111200021 its reverse (120002111220111), we get a palindrome (231024222420132).

The spelling of 111022111200021 in words is "one hundred eleven trillion, twenty-two billion, one hundred eleven million, two hundred thousand, twenty-one".