222086990 has 16 divisors (see below), whose sum is σ = 399993552. Its totient is φ = 88782144.

The previous prime is 222086989. The next prime is 222086993. The reversal of 222086990 is 99680222.

It is a super-2 number, since 2×222086990² = 98645262254520200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222086993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14282 + ... + 25458.

It is an arithmetic number, because the mean of its divisors is an integer number (24999597).

Almost surely, 2^222086990 is an apocalyptic number.

222086990 is a deficient number, since it is larger than the sum of its proper divisors (177906562).

222086990 is a wasteful number, since it uses less digits than its factorization.

222086990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13171.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 222086990 is about 14902.5833331003. The cubic root of 222086990 is about 605.5839727178.

The spelling of 222086990 in words is "two hundred twenty-two million, eighty-six thousand, nine hundred ninety".