212108913009 has 32 divisors (see below), whose sum is σ = 364184340480. Its totient is φ = 119497971600.

The previous prime is 212108912999. The next prime is 212108913053. The reversal of 212108913009 is 900319801212.

It is not a de Polignac number, because 212108913009 - 2²⁷ = 211974695281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212108913409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7889887 + ... + 7916724.

It is an arithmetic number, because the mean of its divisors is an integer number (11380760640).

Almost surely, 2^212108913009 is an apocalyptic number.

It is an amenable number.

212108913009 is a deficient number, since it is larger than the sum of its proper divisors (152075427471).

212108913009 is a wasteful number, since it uses less digits than its factorization.

212108913009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15806698 (or 15806692 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 212108913009 in words is "two hundred twelve billion, one hundred eight million, nine hundred thirteen thousand, nine".