222435901 has 2 divisors, whose sum is σ = 222435902. Its totient is φ = 222435900.

The previous prime is 222435893. The next prime is 222435919. The reversal of 222435901 is 109534222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214651801 + 7784100 = 14651^2 + 2790^2 .

It is a cyclic number.

It is not a de Polignac number, because 222435901 - 2³ = 222435893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222435901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222438901) 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 as a sum of consecutive naturals, namely, 111217950 + 111217951.

It is an arithmetic number, because the mean of its divisors is an integer number (111217951).

Almost surely, 2^222435901 is an apocalyptic number.

It is an amenable number.

222435901 is a deficient number, since it is larger than the sum of its proper divisors (1).

222435901 is an equidigital number, since it uses as much as digits as its factorization.

222435901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 222435901 is about 14914.2851320471. The cubic root of 222435901 is about 605.9009421389.

The spelling of 222435901 in words is "two hundred twenty-two million, four hundred thirty-five thousand, nine hundred one".