101001009979 has 2 divisors, whose sum is σ = 101001009980. Its totient is φ = 101001009978.

The previous prime is 101001009959. The next prime is 101001009997. The reversal of 101001009979 is 979900100101.

Together with next prime (101001009997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101001009979 - 2¹¹ = 101001007931 is a prime.

It is not a weakly prime, because it can be changed into another prime (101001009929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500504989 + 50500504990.

It is an arithmetic number, because the mean of its divisors is an integer number (50500504990).

Almost surely, 2^101001009979 is an apocalyptic number.

101001009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

101001009979 is an equidigital number, since it uses as much as digits as its factorization.

101001009979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 37.

The spelling of 101001009979 in words is "one hundred one billion, one million, nine thousand, nine hundred seventy-nine".