222665140 has 12 divisors (see below), whose sum is σ = 467596836. Its totient is φ = 89066048.

The previous prime is 222665129. The next prime is 222665171. The reversal of 222665140 is 41566222.

222665140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 74166544 + 148498596 = 8612^2 + 12186^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222665099 and 222665108.

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, 5566609 + ... + 5566648.

It is an arithmetic number, because the mean of its divisors is an integer number (38966403).

Almost surely, 2^222665140 is an apocalyptic number.

222665140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222665140 is an abundant number, since it is smaller than the sum of its proper divisors (244931696).

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

222665140 is a wasteful number, since it uses less digits than its factorization.

222665140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11133266 (or 11133264 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 222665140 is about 14921.9683688178. The cubic root of 222665140 is about 606.1090147237.

The spelling of 222665140 in words is "two hundred twenty-two million, six hundred sixty-five thousand, one hundred forty".