212106913 has 2 divisors, whose sum is σ = 212106914. Its totient is φ = 212106912.

The previous prime is 212106907. The next prime is 212106941. The reversal of 212106913 is 319601212.

212106913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166719744 + 45387169 = 12912^2 + 6737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212106913 is a prime.

It is not a weakly prime, because it can be changed into another prime (212106413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106053456 + 106053457.

It is an arithmetic number, because the mean of its divisors is an integer number (106053457).

Almost surely, 2^212106913 is an apocalyptic number.

It is an amenable number.

212106913 is a deficient number, since it is larger than the sum of its proper divisors (1).

212106913 is an equidigital number, since it uses as much as digits as its factorization.

212106913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 212106913 is about 14563.8907232923. The cubic root of 212106913 is about 596.3734137662.

The spelling of 212106913 in words is "two hundred twelve million, one hundred six thousand, nine hundred thirteen".