222221222221222 has 32 divisors (see below), whose sum is σ = 383101930713600. Its totient is φ = 94699914678528.

The previous prime is 222221222221213. The next prime is 222221222221241. The reversal of 222221222221222 is 222122222122222.

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

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, 39123279 + ... + 44441797.

It is an arithmetic number, because the mean of its divisors is an integer number (11971935334800).

Almost surely, 2^{222221222221222} is an apocalyptic number.

222221222221222 is a deficient number, since it is larger than the sum of its proper divisors (160880708492378).

222221222221222 is a wasteful number, since it uses less digits than its factorization.

222221222221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335380.

The product of its digits is 8192, while the sum is 28.

Adding to 222221222221222 its reverse (222122222122222), we get a palindrome (444343444343444).

It can be divided in two parts, 22 and 2221222221222, that multiplied together give a palindrome (48866888866884).

The spelling of 222221222221222 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".