212013001009 has 2 divisors, whose sum is σ = 212013001010. Its totient is φ = 212013001008.

The previous prime is 212013000931. The next prime is 212013001021. The reversal of 212013001009 is 900100310212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195859353600 + 16153647409 = 442560^2 + 127097^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013001009 - 2⁹ = 212013000497 is a prime.

It is not a weakly prime, because it can be changed into another prime (212013001069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006500504 + 106006500505.

It is an arithmetic number, because the mean of its divisors is an integer number (106006500505).

Almost surely, 2^212013001009 is an apocalyptic number.

It is an amenable number.

212013001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013001009 is an equidigital number, since it uses as much as digits as its factorization.

212013001009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 212013001009 in words is "two hundred twelve billion, thirteen million, one thousand, nine".