1222166679 has 8 divisors (see below), whose sum is σ = 1629722880. Its totient is φ = 814694136.

The previous prime is 1222166677. The next prime is 1222166681. The reversal of 1222166679 is 9766612221.

It is an interprime number because it is at equal distance from previous prime (1222166677) and next prime (1222166681).

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

It is not a de Polignac number, because 1222166679 - 2¹ = 1222166677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222166679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222166677) 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, 33124 + ... + 59510.

It is an arithmetic number, because the mean of its divisors is an integer number (203715360).

Almost surely, 2^1222166679 is an apocalyptic number.

1222166679 is a deficient number, since it is larger than the sum of its proper divisors (407556201).

1222166679 is a wasteful number, since it uses less digits than its factorization.

1222166679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41829.

The product of its digits is 108864, while the sum is 42.

The square root of 1222166679 is about 34959.5005542127. The cubic root of 1222166679 is about 1069.1619136813.

The spelling of 1222166679 in words is "one billion, two hundred twenty-two million, one hundred sixty-six thousand, six hundred seventy-nine".