22221222212222 has 32 divisors (see below), whose sum is σ = 38860763109120. Its totient is φ = 9417560298880.

The previous prime is 22221222212213. The next prime is 22221222212243.

22221222212222 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 22221222212191 and 22221222212200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277600322 + ... + 277680357.

It is an arithmetic number, because the mean of its divisors is an integer number (1214398847160).

Almost surely, 2^{22221222212222} is an apocalyptic number.

22221222212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221222212222 is a deficient number, since it is larger than the sum of its proper divisors (16639540896898).

22221222212222 is a wasteful number, since it uses less digits than its factorization.

22221222212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555280816.

The product of its digits is 4096, while the sum is 26.

It can be divided in two parts, 2222122 and 2212222, that added together give a palindrome (4434344).

The spelling of 22221222212222 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".