22221111112222 has 12 divisors (see below), whose sum is σ = 36637286503608. Its totient is φ = 10100505050900.

The previous prime is 22221111112177. The next prime is 22221111112231.

22221111112222 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22221111112193 and 22221111112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45911386354 + ... + 45911386837.

It is an arithmetic number, because the mean of its divisors is an integer number (3053107208634).

Almost surely, 2^{22221111112222} is an apocalyptic number.

22221111112222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221111112222 is a deficient number, since it is larger than the sum of its proper divisors (14416175391386).

22221111112222 is a wasteful number, since it uses less digits than its factorization.

22221111112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91822773215 (or 91822773204 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Multiplying 22221111112222 by its sum of digits (22), we get a palindrome (488864444468884).

It can be divided in two parts, 2222111 and 1112222, that added together give a palindrome (3334333).

The spelling of 22221111112222 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".