1220012022091 has 2 divisors, whose sum is σ = 1220012022092. Its totient is φ = 1220012022090.

The previous prime is 1220012022029. The next prime is 1220012022143. The reversal of 1220012022091 is 1902202100221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220012022091 - 2²³ = 1220003633483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220012022191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610006011045 + 610006011046.

It is an arithmetic number, because the mean of its divisors is an integer number (610006011046).

Almost surely, 2^{1220012022091} is an apocalyptic number.

1220012022091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220012022091 is an equidigital number, since it uses as much as digits as its factorization.

1220012022091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 1220012022091 in words is "one trillion, two hundred twenty billion, twelve million, twenty-two thousand, ninety-one".