222222102211012 has 6 divisors (see below), whose sum is σ = 388888678869278. Its totient is φ = 111111051105504.

The previous prime is 222222102211007. The next prime is 222222102211157. The reversal of 222222102211012 is 210112201222222.

It can be written as a sum of positive squares in only one way, i.e., 215715195064516 + 6506907146496 = 14687246^2 + 2550864^2 .

It is a super-2 number, since 2×222222102211012² (a number of 29 digits) contains 22 as substring.

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, 27777762776373 + ... + 27777762776380.

Almost surely, 2^{222222102211012} is an apocalyptic number.

It is an amenable number.

222222102211012 is a deficient number, since it is larger than the sum of its proper divisors (166666576658266).

222222102211012 is a wasteful number, since it uses less digits than its factorization.

222222102211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555525552757 (or 55555525552755 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222222102211012 its reverse (210112201222222), we get a palindrome (432334303433234).

The spelling of 222222102211012 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred two million, two hundred eleven thousand, twelve".