1121021022091 has 2 divisors, whose sum is σ = 1121021022092. Its totient is φ = 1121021022090.

The previous prime is 1121021022089. The next prime is 1121021022103. The reversal of 1121021022091 is 1902201201211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121021022091 - 2¹ = 1121021022089 is a prime.

Together with 1121021022089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121021022391) 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, 560510511045 + 560510511046.

It is an arithmetic number, because the mean of its divisors is an integer number (560510511046).

Almost surely, 2^{1121021022091} is an apocalyptic number.

1121021022091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121021022091 is an equidigital number, since it uses as much as digits as its factorization.

1121021022091 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 22.

The spelling of 1121021022091 in words is "one trillion, one hundred twenty-one billion, twenty-one million, twenty-two thousand, ninety-one".