212111020013 has 2 divisors, whose sum is σ = 212111020014. Its totient is φ = 212111020012.

The previous prime is 212111019917. The next prime is 212111020021. The reversal of 212111020013 is 310020111212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204436909609 + 7674110404 = 452147^2 + 87602^2 .

It is a cyclic number.

It is not a de Polignac number, because 212111020013 - 2¹⁰ = 212111018989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212111020013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212111020063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055510006 + 106055510007.

It is an arithmetic number, because the mean of its divisors is an integer number (106055510007).

Almost surely, 2^212111020013 is an apocalyptic number.

It is an amenable number.

212111020013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111020013 is an equidigital number, since it uses as much as digits as its factorization.

212111020013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212111020013 its reverse (310020111212), we get a palindrome (522131131225).

The spelling of 212111020013 in words is "two hundred twelve billion, one hundred eleven million, twenty thousand, thirteen".