2217277172 has 24 divisors (see below), whose sum is σ = 4239520992. Its totient is φ = 1006296800.

The previous prime is 2217277159. The next prime is 2217277177. The reversal of 2217277172 is 2717727122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217277177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9854 + ... + 67317.

It is an arithmetic number, because the mean of its divisors is an integer number (176646708).

Almost surely, 2^2217277172 is an apocalyptic number.

2217277172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2217277172 is a deficient number, since it is larger than the sum of its proper divisors (2022243820).

2217277172 is a wasteful number, since it uses less digits than its factorization.

2217277172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77839 (or 77837 counting only the distinct ones).

The product of its digits is 38416, while the sum is 38.

The square root of 2217277172 is about 47087.9726894246. The cubic root of 2217277172 is about 1303.9872006535.

The spelling of 2217277172 in words is "two billion, two hundred seventeen million, two hundred seventy-seven thousand, one hundred seventy-two".