1216922 has 8 divisors (see below), whose sum is σ = 2086176. Its totient is φ = 521532.

The previous prime is 1216913. The next prime is 1216937. The reversal of 1216922 is 2296121.

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

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, 43448 + ... + 43475.

It is an arithmetic number, because the mean of its divisors is an integer number (260772).

2^1216922 is an apocalyptic number.

1216922 is a deficient number, since it is larger than the sum of its proper divisors (869254).

1216922 is an equidigital number, since it uses as much as digits as its factorization.

1216922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86932.

The product of its digits is 432, while the sum is 23.

The square root of 1216922 is about 1103.1418766414. The cubic root of 1216922 is about 106.7630357380.

The spelling of 1216922 in words is "one million, two hundred sixteen thousand, nine hundred twenty-two".