222420132 has 36 divisors (see below), whose sum is σ = 613341456. Its totient is φ = 67399920.

The previous prime is 222420113. The next prime is 222420139. The reversal of 222420132 is 231024222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222420139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280438 + ... + 281229.

Almost surely, 2^222420132 is an apocalyptic number.

222420132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222420132 is an abundant number, since it is smaller than the sum of its proper divisors (390921324).

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

222420132 is a wasteful number, since it uses less digits than its factorization.

222420132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561688 (or 561683 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222420132 is about 14913.7564684421. The cubic root of 222420132 is about 605.8866238900.

Adding to 222420132 its reverse (231024222), we get a palindrome (453444354).

The spelling of 222420132 in words is "two hundred twenty-two million, four hundred twenty thousand, one hundred thirty-two".