222215140 has 24 divisors (see below), whose sum is σ = 533316672. Its totient is φ = 76188000.

The previous prime is 222215113. The next prime is 222215159. The reversal of 222215140 is 41512222.

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, 793486 + ... + 793765.

It is an arithmetic number, because the mean of its divisors is an integer number (22221528).

Almost surely, 2^222215140 is an apocalyptic number.

222215140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222215140 is an abundant number, since it is smaller than the sum of its proper divisors (311101532).

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

222215140 is a wasteful number, since it uses less digits than its factorization.

222215140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587267 (or 1587265 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 222215140 is about 14906.8823031511. The cubic root of 222215140 is about 605.7004295831.

Adding to 222215140 its reverse (41512222), we get a palindrome (263727362).

The spelling of 222215140 in words is "two hundred twenty-two million, two hundred fifteen thousand, one hundred forty".