1222491 has 8 divisors (see below), whose sum is σ = 1647184. Its totient is φ = 806400.

The previous prime is 1222483. The next prime is 1222493. The reversal of 1222491 is 1942221.

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

It is not a de Polignac number, because 1222491 - 2³ = 1222483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222493) 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, 1810 + ... + 2391.

It is an arithmetic number, because the mean of its divisors is an integer number (205898).

2^1222491 is an apocalyptic number.

1222491 is a deficient number, since it is larger than the sum of its proper divisors (424693).

1222491 is an equidigital number, since it uses as much as digits as its factorization.

1222491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301.

The product of its digits is 288, while the sum is 21.

The square root of 1222491 is about 1105.6631494266. The cubic root of 1222491 is about 106.9256478250.

The spelling of 1222491 in words is "one million, two hundred twenty-two thousand, four hundred ninety-one".