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222100133 = 761291853

222100133 has 4 divisors (see below), whose sum is σ = 222392748. Its totient is φ = 221807520.

The previous prime is 222100129. The next prime is 222100169. The reversal of 222100133 is 331001222.

Adding to 222100133 its reverse (331001222), we get a palindrome (553101355).

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331001222 = 2165500611.

It can be written as a sum of positive squares in 2 ways, for example, as 25623844 + 196476289 = 5062^2 + 14017^2 .

It is a cyclic number.

It is not a de Polignac number, because 222100133 - 22 = 222100129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100103) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 145166 + ... + 146687.

It is an arithmetic number, because the mean of its divisors is an integer number (55598187).

Almost surely, 2222100133 is an apocalyptic number.

It is an amenable number.

222100133 is a deficient number, since it is larger than the sum of its proper divisors (292615).

222100133 is an equidigital number, since it uses as much as digits as its factorization.

222100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292614.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 222100133 is about 14903.0242903915. The cubic root of 222100133 is about 605.5959185370.

The spelling of 222100133 in words is "two hundred twenty-two million, one hundred thousand, one hundred thirty-three".

Divisors: 1 761 291853 222100133