222221022222212 has 12 divisors (see below), whose sum is σ = 418801157265036. Its totient is φ = 102563548717920.

The previous prime is 222221022222211. The next prime is 222221022222239. The reversal of 222221022222212 is 212222220122222.

It can be written as a sum of positive squares in 2 ways, for example, as 24529098614596 + 197691923607616 = 4952686^2 + 14060296^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (222221022222211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136740598239 + ... + 2136740598342.

It is an arithmetic number, because the mean of its divisors is an integer number (34900096438753).

Almost surely, 2^{222221022222212} is an apocalyptic number.

It is an amenable number.

222221022222212 is a deficient number, since it is larger than the sum of its proper divisors (196580135042824).

222221022222212 is a wasteful number, since it uses less digits than its factorization.

222221022222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273481196598 (or 4273481196596 counting only the distinct ones).

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

Adding to 222221022222212 its reverse (212222220122222), we get a palindrome (434443242344434).

The spelling of 222221022222212 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, two hundred twelve".