222500001 has 8 divisors (see below), whose sum is σ = 301530304. Its totient is φ = 145901520.

The previous prime is 222499987. The next prime is 222500023. The reversal of 222500001 is 100005222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222500001 - 2⁵ = 222499969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222500001.

It is not an unprimeable number, because it can be changed into a prime (222500041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607741 + ... + 608106.

It is an arithmetic number, because the mean of its divisors is an integer number (37691288).

Almost surely, 2^222500001 is an apocalyptic number.

It is an amenable number.

222500001 is a deficient number, since it is larger than the sum of its proper divisors (79030303).

222500001 is a wasteful number, since it uses less digits than its factorization.

222500001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215911.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 222500001 is about 14916.4339236964. The cubic root of 222500001 is about 605.9591379608.

Adding to 222500001 its reverse (100005222), we get a palindrome (322505223).

The spelling of 222500001 in words is "two hundred twenty-two million, five hundred thousand, one".