1121021101979 has 2 divisors, whose sum is σ = 1121021101980. Its totient is φ = 1121021101978.

The previous prime is 1121021101927. The next prime is 1121021101987. The reversal of 1121021101979 is 9791011201211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121021101979 - 2²⁴ = 1121004324763 is a prime.

It is a super-2 number, since 2×1121021101979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121021101909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510550989 + 560510550990.

It is an arithmetic number, because the mean of its divisors is an integer number (560510550990).

Almost surely, 2^{1121021101979} is an apocalyptic number.

1121021101979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121021101979 is an equidigital number, since it uses as much as digits as its factorization.

1121021101979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 35.

The spelling of 1121021101979 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred one thousand, nine hundred seventy-nine".