1222312166 has 8 divisors (see below), whose sum is σ = 1839008424. Its totient is φ = 609309360.

The previous prime is 1222312153. The next prime is 1222312171. The reversal of 1222312166 is 6612132221.

It is a happy number.

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

It is a super-2 number, since 2×1222312166² = 2988094062303223112, which contains 22 as substring.

It is a congruent number.

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, 922535 + ... + 923858.

It is an arithmetic number, because the mean of its divisors is an integer number (229876053).

Almost surely, 2^1222312166 is an apocalyptic number.

1222312166 is a deficient number, since it is larger than the sum of its proper divisors (616696258).

1222312166 is a wasteful number, since it uses less digits than its factorization.

1222312166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846726.

The product of its digits is 1728, while the sum is 26.

The square root of 1222312166 is about 34961.5812857485. The cubic root of 1222312166 is about 1069.2043364239.

Adding to 1222312166 its reverse (6612132221), we get a palindrome (7834444387).

It can be divided in two parts, 12223 and 12166, that added together give a cube (24389 = 29³).

The spelling of 1222312166 in words is "one billion, two hundred twenty-two million, three hundred twelve thousand, one hundred sixty-six".