222145001 has 16 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 192453888.

The previous prime is 222144991. The next prime is 222145037. The reversal of 222145001 is 100541222.

222145001 = T₂₉₂₆ + T₂₉₂₇ + ... + T₂₉₇₆.

It is a cyclic number.

It is not a de Polignac number, because 222145001 - 2²⁶ = 155036137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222145061) 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 15 ways as a sum of consecutive naturals, for example, 91400 + ... + 93798.

It is an arithmetic number, because the mean of its divisors is an integer number (15876000).

Almost surely, 2^222145001 is an apocalyptic number.

It is an amenable number.

222145001 is a deficient number, since it is larger than the sum of its proper divisors (31870999).

222145001 is a wasteful number, since it uses less digits than its factorization.

222145001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 222145001 is about 14904.5295464164. The cubic root of 222145001 is about 605.6366960125.

Adding to 222145001 its reverse (100541222), we get a palindrome (322686223).

The spelling of 222145001 in words is "two hundred twenty-two million, one hundred forty-five thousand, one".