222132100 has 18 divisors (see below), whose sum is σ = 482026874. Its totient is φ = 88852800.

The previous prime is 222132073. The next prime is 222132101. The reversal of 222132100 is 1231222.

It can be written as a sum of positive squares in 3 ways, for example, as 21399876 + 200732224 = 4626^2 + 14168^2 .

It is not an unprimeable number, because it can be changed into a prime (222132101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1110561 + ... + 1110760.

Almost surely, 2^222132100 is an apocalyptic number.

222132100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222132100 is an abundant number, since it is smaller than the sum of its proper divisors (259894774).

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

222132100 is a wasteful number, since it uses less digits than its factorization.

222132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221335 (or 2221328 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 222132100 is about 14904.0967522356. The cubic root of 222132100 is about 605.6249717329.

Adding to 222132100 its reverse (1231222), we get a palindrome (223363322).

The spelling of 222132100 in words is "two hundred twenty-two million, one hundred thirty-two thousand, one hundred".