222221101211012 has 6 divisors (see below), whose sum is σ = 388886927119278. Its totient is φ = 111110550605504.

The previous prime is 222221101210961. The next prime is 222221101211027. The reversal of 222221101211012 is 210112101122222.

It can be written as a sum of positive squares in only one way, i.e., 215654100447556 + 6567000763456 = 14685166^2 + 2562616^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777637651373 + ... + 27777637651380.

It is an arithmetic number, because the mean of its divisors is an integer number (64814487853213).

Almost surely, 2^{222221101211012} is an apocalyptic number.

It is an amenable number.

222221101211012 is a deficient number, since it is larger than the sum of its proper divisors (166665825908266).

222221101211012 is a wasteful number, since it uses less digits than its factorization.

222221101211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555275302757 (or 55555275302755 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222221101211012 its reverse (210112101122222), we get a palindrome (432333202333234).

The spelling of 222221101211012 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred one million, two hundred eleven thousand, twelve".