1121002102091 has 4 divisors (see below), whose sum is σ = 1186943402232. Its totient is φ = 1055060801952.

The previous prime is 1121002102039. The next prime is 1121002102163. The reversal of 1121002102091 is 1902012001211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121002102091 - 2³⁴ = 1103822232907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121002102391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32970650045 + ... + 32970650078.

It is an arithmetic number, because the mean of its divisors is an integer number (296735850558).

Almost surely, 2^{1121002102091} is an apocalyptic number.

1121002102091 is a deficient number, since it is larger than the sum of its proper divisors (65941300141).

1121002102091 is an equidigital number, since it uses as much as digits as its factorization.

1121002102091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65941300140.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1121002102091 in words is "one trillion, one hundred twenty-one billion, two million, one hundred two thousand, ninety-one".