222132500 has 30 divisors (see below), whose sum is σ = 485764818. Its totient is φ = 88852000.

The previous prime is 222132499. The next prime is 222132529. The reversal of 222132500 is 5231222.

It can be written as a sum of positive squares in 5 ways, for example, as 20322064 + 201810436 = 4508^2 + 14206^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41927 + ... + 46926.

Almost surely, 2^222132500 is an apocalyptic number.

222132500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222132500 is an abundant number, since it is smaller than the sum of its proper divisors (263632318).

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

222132500 is an equidigital number, since it uses as much as digits as its factorization.

222132500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88877 (or 88860 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 222132500 is about 14904.1101713588. The cubic root of 222132500 is about 605.6253352551.

Adding to 222132500 its reverse (5231222), we get a palindrome (227363722).

The spelling of 222132500 in words is "two hundred twenty-two million, one hundred thirty-two thousand, five hundred".