22111000111218 has 16 divisors (see below), whose sum is σ = 44222046331680. Its totient is φ = 7370325685536.

The previous prime is 22111000111217. The next prime is 22111000111231. The reversal of 22111000111218 is 81211100011122.

It is a junction number, because it is equal to n+sod(n) for n = 22111000111194 and 22111000111203.

It is not an unprimeable number, because it can be changed into a prime (22111000111217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10066921 + ... + 12065027.

It is an arithmetic number, because the mean of its divisors is an integer number (2763877895730).

Almost surely, 2^{22111000111218} is an apocalyptic number.

22111000111218 is an abundant number, since it is smaller than the sum of its proper divisors (22111046220462).

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

22111000111218 is a wasteful number, since it uses less digits than its factorization.

22111000111218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842441.

The product of its (nonzero) digits is 64, while the sum is 21.

The spelling of 22111000111218 in words is "twenty-two trillion, one hundred eleven billion, one hundred eleven thousand, two hundred eighteen".