222001136 has 20 divisors (see below), whose sum is σ = 491574192. Its totient is φ = 95143296.

The previous prime is 222001121. The next prime is 222001141. The reversal of 222001136 is 631100222.

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, 990965 + ... + 991188.

Almost surely, 2^222001136 is an apocalyptic number.

It is an amenable number.

222001136 is an abundant number, since it is smaller than the sum of its proper divisors (269573056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222001136 is a wasteful number, since it uses less digits than its factorization.

222001136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982168 (or 1982162 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 222001136 is about 14899.7025473665. The cubic root of 222001136 is about 605.5059274625.

Adding to 222001136 its reverse (631100222), we get a palindrome (853101358).

The spelling of 222001136 in words is "two hundred twenty-two million, one thousand, one hundred thirty-six".