1226172066 has 32 divisors (see below), whose sum is σ = 2855564928. Its totient is φ = 343724160.

The previous prime is 1226172061. The next prime is 1226172083. The reversal of 1226172066 is 6602716221.

It is not an unprimeable number, because it can be changed into a prime (1226172061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273195 + ... + 277646.

It is an arithmetic number, because the mean of its divisors is an integer number (89236404).

Almost surely, 2^1226172066 is an apocalyptic number.

1226172066 is an abundant number, since it is smaller than the sum of its proper divisors (1629392862).

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

1226172066 is a wasteful number, since it uses less digits than its factorization.

1226172066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550906.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1226172066 is about 35016.7397968457. The cubic root of 1226172066 is about 1070.3286223857.

Adding to 1226172066 its reverse (6602716221), we get a palindrome (7828888287).

The spelling of 1226172066 in words is "one billion, two hundred twenty-six million, one hundred seventy-two thousand, sixty-six".