222122221222 has 16 divisors (see below), whose sum is σ = 363482106192. Its totient is φ = 100962040320.

The previous prime is 222122221133. The next prime is 222122221259.

222122221222 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 junction number, because it is equal to n+sod(n) for n = 222122221193 and 222122221202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935158 + ... + 1148374.

It is an arithmetic number, because the mean of its divisors is an integer number (22717631637).

Almost surely, 2^222122221222 is an apocalyptic number.

222122221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222122221222 is a deficient number, since it is larger than the sum of its proper divisors (141359884970).

222122221222 is a wasteful number, since it uses less digits than its factorization.

222122221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260583.

The product of its digits is 1024, while the sum is 22.

Multiplying 222122221222 by its sum of digits (22), we get a palindrome (4886688866884).

It can be divided in two parts, 222122 and 221222, that added together give a palindrome (443344).

The spelling of 222122221222 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".