212013103109 has 4 divisors (see below), whose sum is σ = 212014374720. Its totient is φ = 212011831500.

The previous prime is 212013103061. The next prime is 212013103121. The reversal of 212013103109 is 901301310212.

212013103109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212013103109 - 2¹² = 212013099013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212013103139) 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 3 ways as a sum of consecutive naturals, for example, 339767 + ... + 734484.

It is an arithmetic number, because the mean of its divisors is an integer number (53003593680).

Almost surely, 2^212013103109 is an apocalyptic number.

It is an amenable number.

212013103109 is a deficient number, since it is larger than the sum of its proper divisors (1271611).

212013103109 is a wasteful number, since it uses less digits than its factorization.

212013103109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271610.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 212013103109 in words is "two hundred twelve billion, thirteen million, one hundred three thousand, one hundred nine".