222145132 has 96 divisors (see below), whose sum is σ = 467841024. Its totient is φ = 91238400.

The previous prime is 222145129. The next prime is 222145139. The reversal of 222145132 is 231541222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (222145139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2290108 + ... + 2290204.

It is an arithmetic number, because the mean of its divisors is an integer number (4873344).

Almost surely, 2^222145132 is an apocalyptic number.

222145132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222145132 is an abundant number, since it is smaller than the sum of its proper divisors (245695892).

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

222145132 is a wasteful number, since it uses less digits than its factorization.

222145132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 237 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 222145132 is about 14904.5339410530. The cubic root of 222145132 is about 605.6368150614.

Adding to 222145132 its reverse (231541222), we get a palindrome (453686354).

The spelling of 222145132 in words is "two hundred twenty-two million, one hundred forty-five thousand, one hundred thirty-two".