222549988 has 12 divisors (see below), whose sum is σ = 390417580. Its totient is φ = 111002112.

The previous prime is 222549923. The next prime is 222549989. The reversal of 222549988 is 889945222.

It can be written as a sum of positive squares in 2 ways, for example, as 88962624 + 133587364 = 9432^2 + 11558^2 .

It is not an unprimeable number, because it can be changed into a prime (222549989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66381 + ... + 69652.

Almost surely, 2^222549988 is an apocalyptic number.

It is an amenable number.

222549988 is a deficient number, since it is larger than the sum of its proper divisors (167867592).

222549988 is a wasteful number, since it uses less digits than its factorization.

222549988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136446 (or 136444 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 222549988 is about 14918.1093976415. The cubic root of 222549988 is about 606.0045129589.

The spelling of 222549988 in words is "two hundred twenty-two million, five hundred forty-nine thousand, nine hundred eighty-eight".