1122291 has 6 divisors (see below), whose sum is σ = 1621100. Its totient is φ = 748188.

The previous prime is 1122287. The next prime is 1122367. The reversal of 1122291 is 1922211.

It is not a de Polignac number, because 1122291 - 2² = 1122287 is a prime.

It is a Duffinian number.

1122291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1122241) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 62341 + ... + 62358.

2^1122291 is an apocalyptic number.

1122291 is a deficient number, since it is larger than the sum of its proper divisors (498809).

1122291 is a wasteful number, since it uses less digits than its factorization.

1122291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124705 (or 124702 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1122291 is about 1059.3823672310. The cubic root of 1122291 is about 103.9206433582.

The spelling of 1122291 in words is "one million, one hundred twenty-two thousand, two hundred ninety-one".