201172222 has 4 divisors (see below), whose sum is σ = 301758336. Its totient is φ = 100586110.

The previous prime is 201172211. The next prime is 201172249. The reversal of 201172222 is 222271102.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 201172222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50293054 + ... + 50293057.

It is an arithmetic number, because the mean of its divisors is an integer number (75439584).

Almost surely, 2^201172222 is an apocalyptic number.

201172222 is a deficient number, since it is larger than the sum of its proper divisors (100586114).

201172222 is a wasteful number, since it uses less digits than its factorization.

201172222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100586113.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 201172222 is about 14183.5193799000. The cubic root of 201172222 is about 585.9438553532.

The spelling of 201172222 in words is "two hundred one million, one hundred seventy-two thousand, two hundred twenty-two".