1011220009979 has 2 divisors, whose sum is σ = 1011220009980. Its totient is φ = 1011220009978.

The previous prime is 1011220009939. The next prime is 1011220010011. The reversal of 1011220009979 is 9799000221101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011220009979 - 2¹² = 1011220005883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1011220009939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505610004989 + 505610004990.

It is an arithmetic number, because the mean of its divisors is an integer number (505610004990).

Almost surely, 2^{1011220009979} is an apocalyptic number.

1011220009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011220009979 is an equidigital number, since it uses as much as digits as its factorization.

1011220009979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 1011220009979 in words is "one trillion, eleven billion, two hundred twenty million, nine thousand, nine hundred seventy-nine".