212102009979 has 8 divisors (see below), whose sum is σ = 282925807440. Its totient is φ = 141339776256.

The previous prime is 212102009941. The next prime is 212102010007. The reversal of 212102009979 is 979900201212.

212102009979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212102009979 - 2⁸ = 212102009723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212102009979.

It is not an unprimeable number, because it can be changed into a prime (212102009909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15382894 + ... + 15396675.

It is an arithmetic number, because the mean of its divisors is an integer number (35365725930).

Almost surely, 2^212102009979 is an apocalyptic number.

212102009979 is a deficient number, since it is larger than the sum of its proper divisors (70823797461).

212102009979 is a wasteful number, since it uses less digits than its factorization.

212102009979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30781869.

The product of its (nonzero) digits is 40824, while the sum is 42.

The spelling of 212102009979 in words is "two hundred twelve billion, one hundred two million, nine thousand, nine hundred seventy-nine".