222158601 has 36 divisors (see below), whose sum is σ = 395258292. Its totient is φ = 119476224.

The previous prime is 222158591. The next prime is 222158609. The reversal of 222158601 is 106851222.

It is a happy number.

222158601 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 58 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 204518601 + 17640000 = 14301^2 + 4200^2 .

It is not a de Polignac number, because 222158601 - 2⁵ = 222158569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222158609) 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 35 ways as a sum of consecutive naturals, for example, 7320 + ... + 22313.

It is an arithmetic number, because the mean of its divisors is an integer number (10979397).

Almost surely, 2^222158601 is an apocalyptic number.

222158601 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222158601 is a deficient number, since it is larger than the sum of its proper divisors (173099691).

222158601 is a wasteful number, since it uses less digits than its factorization.

222158601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29670 (or 29660 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 222158601 is about 14904.9857765783. The cubic root of 222158601 is about 605.6490550437.

The spelling of 222158601 in words is "two hundred twenty-two million, one hundred fifty-eight thousand, six hundred one".