1121111020291 has 2 divisors, whose sum is σ = 1121111020292. Its totient is φ = 1121111020290.

The previous prime is 1121111020277. The next prime is 1121111020297. The reversal of 1121111020291 is 1920201111211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1920201111211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121111020291 - 2⁵ = 1121111020259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121111020297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555510145 + 560555510146.

It is an arithmetic number, because the mean of its divisors is an integer number (560555510146).

Almost surely, 2^{1121111020291} is an apocalyptic number.

1121111020291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111020291 is an equidigital number, since it uses as much as digits as its factorization.

1121111020291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1121111020291 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, twenty thousand, two hundred ninety-one".