222012805 has 16 divisors (see below), whose sum is σ = 306184320. Its totient is φ = 151382592.

The previous prime is 222012797. The next prime is 222012821. The reversal of 222012805 is 508210222.

It is a cyclic number.

It is not a de Polignac number, because 222012805 - 2³ = 222012797 is a prime.

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, 11454 + ... + 23983.

It is an arithmetic number, because the mean of its divisors is an integer number (19136520).

Almost surely, 2^222012805 is an apocalyptic number.

It is an amenable number.

222012805 is a deficient number, since it is larger than the sum of its proper divisors (84171515).

222012805 is a wasteful number, since it uses less digits than its factorization.

222012805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35628.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 222012805 is about 14900.0941272195. The cubic root of 222012805 is about 605.5165363044.

The spelling of 222012805 in words is "two hundred twenty-two million, twelve thousand, eight hundred five".