2220217172 has 12 divisors (see below), whose sum is σ = 3891073536. Its totient is φ = 1108481880.

The previous prime is 2220217159. The next prime is 2220217217. The reversal of 2220217172 is 2717120222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403604 + ... + 409067.

It is an arithmetic number, because the mean of its divisors is an integer number (324256128).

Almost surely, 2^2220217172 is an apocalyptic number.

It is an amenable number.

2220217172 is a deficient number, since it is larger than the sum of its proper divisors (1670856364).

2220217172 is a wasteful number, since it uses less digits than its factorization.

2220217172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813358 (or 813356 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 2220217172 is about 47119.1805107007. The cubic root of 2220217172 is about 1304.5632869788.

Adding to 2220217172 its reverse (2717120222), we get a palindrome (4937337394).

The spelling of 2220217172 in words is "two billion, two hundred twenty million, two hundred seventeen thousand, one hundred seventy-two".