111221220202122 has 16 divisors (see below), whose sum is σ = 223269363977760. Its totient is φ = 36935919471792.

The previous prime is 111221220202063. The next prime is 111221220202139. The reversal of 111221220202122 is 221202022122111.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34455147148 + ... + 34455150375.

It is an arithmetic number, because the mean of its divisors is an integer number (13954335248610).

Almost surely, 2^{111221220202122} is an apocalyptic number.

111221220202122 is an abundant number, since it is smaller than the sum of its proper divisors (112048143775638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221220202122 is a wasteful number, since it uses less digits than its factorization.

111221220202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68910297797.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 111221220202122 its reverse (221202022122111), we get a palindrome (332423242324233).

The spelling of 111221220202122 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty million, two hundred two thousand, one hundred twenty-two".