222010100 has 36 divisors (see below), whose sum is σ = 518823564. Its totient is φ = 81972480.

The previous prime is 222010091. The next prime is 222010111. The reversal of 222010100 is 1010222.

It can be written as a sum of positive squares in 6 ways, for example, as 57093136 + 164916964 = 7556^2 + 12842^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84089 + ... + 86688.

Almost surely, 2^222010100 is an apocalyptic number.

222010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222010100 is an abundant number, since it is smaller than the sum of its proper divisors (296813464).

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

222010100 is a wasteful number, since it uses less digits than its factorization.

222010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170804 (or 170797 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 222010100 is about 14900.0033557043. The cubic root of 222010100 is about 605.5140770936.

Adding to 222010100 its reverse (1010222), we get a palindrome (223020322).

The spelling of 222010100 in words is "two hundred twenty-two million, ten thousand, one hundred".