111200022021221 has 16 divisors (see below), whose sum is σ = 133774758096000. Its totient is φ = 90297562771008.

The previous prime is 111200022021211. The next prime is 111200022021233. The reversal of 111200022021221 is 122120220002111.

It is a cyclic number.

It is not a de Polignac number, because 111200022021221 - 2³⁸ = 110925144114277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111200022021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200022021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105095411 + ... + 106148223.

It is an arithmetic number, because the mean of its divisors is an integer number (8360922381000).

Almost surely, 2^{111200022021221} is an apocalyptic number.

It is an amenable number.

111200022021221 is a deficient number, since it is larger than the sum of its proper divisors (22574736074779).

111200022021221 is a wasteful number, since it uses less digits than its factorization.

111200022021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846988.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111200022021221 its reverse (122120220002111), we get a palindrome (233320242023332).

The spelling of 111200022021221 in words is "one hundred eleven trillion, two hundred billion, twenty-two million, twenty-one thousand, two hundred twenty-one".