111210022221 has 16 divisors (see below), whose sum is σ = 157009112064. Its totient is φ = 69775847424.

The previous prime is 111210022199. The next prime is 111210022223. The reversal of 111210022221 is 122220012111.

It is not a de Polignac number, because 111210022221 - 2²⁵ = 111176467789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111210022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2283501 + ... + 2331693.

It is an arithmetic number, because the mean of its divisors is an integer number (9813069504).

Almost surely, 2^111210022221 is an apocalyptic number.

It is an amenable number.

111210022221 is a deficient number, since it is larger than the sum of its proper divisors (45799089843).

111210022221 is a wasteful number, since it uses less digits than its factorization.

111210022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93460.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111210022221 its reverse (122220012111), we get a palindrome (233430034332).

The spelling of 111210022221 in words is "one hundred eleven billion, two hundred ten million, twenty-two thousand, two hundred twenty-one".