201172422 has 24 divisors (see below), whose sum is σ = 442248408. Its totient is φ = 60961120.

The previous prime is 201172417. The next prime is 201172429. The reversal of 201172422 is 224271102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201172429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137823 + ... + 139274.

It is an arithmetic number, because the mean of its divisors is an integer number (18427017).

Almost surely, 2^201172422 is an apocalyptic number.

201172422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201172422 is an abundant number, since it is smaller than the sum of its proper divisors (241075986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201172422 is a wasteful number, since it uses less digits than its factorization.

201172422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277124 (or 277113 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 201172422 is about 14183.5264303346. The cubic root of 201172422 is about 585.9440495296.

The spelling of 201172422 in words is "two hundred one million, one hundred seventy-two thousand, four hundred twenty-two".