222001012 has 12 divisors (see below), whose sum is σ = 388618020. Its totient is φ = 110967296.

The previous prime is 222001009. The next prime is 222001027. The reversal of 222001012 is 210100222.

It can be written as a sum of positive squares in 2 ways, for example, as 35569296 + 186431716 = 5964^2 + 13654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12564 + ... + 24532.

It is an arithmetic number, because the mean of its divisors is an integer number (32384835).

Almost surely, 2^222001012 is an apocalyptic number.

It is an amenable number.

222001012 is a deficient number, since it is larger than the sum of its proper divisors (166617008).

222001012 is a wasteful number, since it uses less digits than its factorization.

222001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16610 (or 16608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 222001012 is about 14899.6983862090. The cubic root of 222001012 is about 605.5058147262.

Adding to 222001012 its reverse (210100222), we get a palindrome (432101234).

The spelling of 222001012 in words is "two hundred twenty-two million, one thousand, twelve".