100122211979 has 2 divisors, whose sum is σ = 100122211980. Its totient is φ = 100122211978.

The previous prime is 100122211921. The next prime is 100122211997. The reversal of 100122211979 is 979112221001.

Together with next prime (100122211997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (979112221001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100122211979 is a prime.

It is a super-2 number, since 2×100122211979² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100122211999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061105989 + 50061105990.

It is an arithmetic number, because the mean of its divisors is an integer number (50061105990).

Almost surely, 2^100122211979 is an apocalyptic number.

100122211979 is a deficient number, since it is larger than the sum of its proper divisors (1).

100122211979 is an equidigital number, since it uses as much as digits as its factorization.

100122211979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 100122211979 in words is "one hundred billion, one hundred twenty-two million, two hundred eleven thousand, nine hundred seventy-nine".