1122212291 has 2 divisors, whose sum is σ = 1122212292. Its totient is φ = 1122212290.

The previous prime is 1122212269. The next prime is 1122212327. The reversal of 1122212291 is 1922122211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1122212291 - 2¹⁰ = 1122211267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122212591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561106145 + 561106146.

It is an arithmetic number, because the mean of its divisors is an integer number (561106146).

Almost surely, 2^1122212291 is an apocalyptic number.

1122212291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122212291 is an equidigital number, since it uses as much as digits as its factorization.

1122212291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 23.

The square root of 1122212291 is about 33499.4371743765. The cubic root of 1122212291 is about 1039.1821389884.

The spelling of 1122212291 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred ninety-one".