111222022211988 has 48 divisors (see below), whose sum is σ = 266540642505984. Its totient is φ = 36070844745600.

The previous prime is 111222022211987. The next prime is 111222022212053. The reversal of 111222022211988 is 889112220222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222022211983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9810306 + ... + 17851782.

It is an arithmetic number, because the mean of its divisors is an integer number (5552930052208).

Almost surely, 2^{111222022211988} is an apocalyptic number.

It is an amenable number.

111222022211988 is an abundant number, since it is smaller than the sum of its proper divisors (155318620293996).

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

111222022211988 is a wasteful number, since it uses less digits than its factorization.

111222022211988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8072672 (or 8072670 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The spelling of 111222022211988 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-two million, two hundred eleven thousand, nine hundred eighty-eight".