210101309979 has 16 divisors (see below), whose sum is σ = 323578488960. Its totient is φ = 119843884160.

The previous prime is 210101309963. The next prime is 210101309989. The reversal of 210101309979 is 979903101012.

It is not a de Polignac number, because 210101309979 - 2⁴ = 210101309963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210101309979.

It is not an unprimeable number, because it can be changed into a prime (210101309959) 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 in 15 ways as a sum of consecutive naturals, for example, 187255509 + ... + 187256630.

It is an arithmetic number, because the mean of its divisors is an integer number (20223655560).

Almost surely, 2^210101309979 is an apocalyptic number.

210101309979 is a deficient number, since it is larger than the sum of its proper divisors (113477178981).

210101309979 is a wasteful number, since it uses less digits than its factorization.

210101309979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374512170.

The product of its (nonzero) digits is 30618, while the sum is 42.

The spelling of 210101309979 in words is "two hundred ten billion, one hundred one million, three hundred nine thousand, nine hundred seventy-nine".