212050913 has 4 divisors (see below), whose sum is σ = 215215920. Its totient is φ = 208885908.

The previous prime is 212050907. The next prime is 212050921. The reversal of 212050913 is 319050212.

212050913 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 a de Polignac number, because none of the positive numbers 2^k-212050913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212050903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582403 + ... + 1582536.

It is an arithmetic number, because the mean of its divisors is an integer number (53803980).

Almost surely, 2^212050913 is an apocalyptic number.

It is an amenable number.

212050913 is a deficient number, since it is larger than the sum of its proper divisors (3165007).

212050913 is an equidigital number, since it uses as much as digits as its factorization.

212050913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165006.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 212050913 is about 14561.9680332021. The cubic root of 212050913 is about 596.3209247481.

The spelling of 212050913 in words is "two hundred twelve million, fifty thousand, nine hundred thirteen".