11011010221979 has 2 divisors, whose sum is σ = 11011010221980. Its totient is φ = 11011010221978.

The previous prime is 11011010221969. The next prime is 11011010221993. The reversal of 11011010221979 is 97912201011011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11011010221979 - 2⁴ = 11011010221963 is a prime.

It is a super-2 number, since 2×11011010221979² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11011010221969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505505110989 + 5505505110990.

It is an arithmetic number, because the mean of its divisors is an integer number (5505505110990).

Almost surely, 2^{11011010221979} is an apocalyptic number.

11011010221979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011010221979 is an equidigital number, since it uses as much as digits as its factorization.

11011010221979 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 11011010221979 in words is "eleven trillion, eleven billion, ten million, two hundred twenty-one thousand, nine hundred seventy-nine".