1222002091 has 2 divisors, whose sum is σ = 1222002092. Its totient is φ = 1222002090.

The previous prime is 1222002083. The next prime is 1222002107. The reversal of 1222002091 is 1902002221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222002091 - 2³ = 1222002083 is a prime.

It is a super-2 number, since 2×1222002091² = 2986578220816744562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222005091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611001045 + 611001046.

It is an arithmetic number, because the mean of its divisors is an integer number (611001046).

Almost surely, 2^1222002091 is an apocalyptic number.

1222002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222002091 is an equidigital number, since it uses as much as digits as its factorization.

1222002091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1222002091 is about 34957.1464939574. The cubic root of 1222002091 is about 1069.1139171944.

The spelling of 1222002091 in words is "one billion, two hundred twenty-two million, two thousand, ninety-one".