222801236 has 18 divisors (see below), whose sum is σ = 453560058. Its totient is φ = 95486160.

The previous prime is 222801191. The next prime is 222801289. The reversal of 222801236 is 632108222.

It can be written as a sum of positive squares in only one way, i.e., 218152900 + 4648336 = 14770^2 + 2156^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 568175 + ... + 568566.

It is an arithmetic number, because the mean of its divisors is an integer number (25197781).

Almost surely, 2^222801236 is an apocalyptic number.

It is an amenable number.

222801236 is an abundant number, since it is smaller than the sum of its proper divisors (230758822).

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

222801236 is a wasteful number, since it uses less digits than its factorization.

222801236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136759 (or 1136750 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 222801236 is about 14926.5279284903. The cubic root of 222801236 is about 606.2324769654.

Adding to 222801236 its reverse (632108222), we get a palindrome (854909458).

The spelling of 222801236 in words is "two hundred twenty-two million, eight hundred one thousand, two hundred thirty-six".