222206990 has 16 divisors (see below), whose sum is σ = 413765280. Its totient is φ = 85817760.

The previous prime is 222206989. The next prime is 222207001. The reversal of 222206990 is 99602222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382826 + ... + 383405.

It is an arithmetic number, because the mean of its divisors is an integer number (25860330).

Almost surely, 2^222206990 is an apocalyptic number.

222206990 is a deficient number, since it is larger than the sum of its proper divisors (191558290).

222206990 is a wasteful number, since it uses less digits than its factorization.

222206990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766267.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 222206990 is about 14906.6089369783. The cubic root of 222206990 is about 605.6930245688.

The spelling of 222206990 in words is "two hundred twenty-two million, two hundred six thousand, nine hundred ninety".