2172252226 has 8 divisors (see below), whose sum is σ = 3280247100. Its totient is φ = 1078836528.

The previous prime is 2172252149. The next prime is 2172252233. The reversal of 2172252226 is 6222522712.

It can be written as a sum of positive squares in 2 ways, for example, as 1540484001 + 631768225 = 39249^2 + 25135^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3644421 + ... + 3645016.

Almost surely, 2^2172252226 is an apocalyptic number.

2172252226 is a deficient number, since it is larger than the sum of its proper divisors (1107994874).

2172252226 is a wasteful number, since it uses less digits than its factorization.

2172252226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289588.

The product of its digits is 13440, while the sum is 31.

The square root of 2172252226 is about 46607.4267257912. The cubic root of 2172252226 is about 1295.1003387716.

Adding to 2172252226 its reverse (6222522712), we get a palindrome (8394774938).

The spelling of 2172252226 in words is "two billion, one hundred seventy-two million, two hundred fifty-two thousand, two hundred twenty-six".