222250001 has 4 divisors (see below), whose sum is σ = 224407872. Its totient is φ = 220092132.

The previous prime is 222249983. The next prime is 222250069. The reversal of 222250001 is 100052222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100052222 = 2 ⋅50026111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222250001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222252001) 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 in 3 ways as a sum of consecutive naturals, for example, 1078781 + ... + 1078986.

It is an arithmetic number, because the mean of its divisors is an integer number (56101968).

Almost surely, 2^222250001 is an apocalyptic number.

It is an amenable number.

222250001 is a deficient number, since it is larger than the sum of its proper divisors (2157871).

222250001 is a wasteful number, since it uses less digits than its factorization.

222250001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157870.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 222250001 is about 14908.0515494145. The cubic root of 222250001 is about 605.7321019204.

The spelling of 222250001 in words is "two hundred twenty-two million, two hundred fifty thousand, one".