210111102021013 has 2 divisors, whose sum is σ = 210111102021014. Its totient is φ = 210111102021012.

The previous prime is 210111102020959. The next prime is 210111102021031. The reversal of 210111102021013 is 310120201111012.

It is a happy number.

Together with next prime (210111102021031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142471366482769 + 67639735538244 = 11936137^2 + 8224338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210111102021013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210111102021113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055551010506 + 105055551010507.

It is an arithmetic number, because the mean of its divisors is an integer number (105055551010507).

Almost surely, 2^{210111102021013} is an apocalyptic number.

It is an amenable number.

210111102021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111102021013 is an equidigital number, since it uses as much as digits as its factorization.

210111102021013 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 16.

Adding to 210111102021013 its reverse (310120201111012), we get a palindrome (520231303132025).

The spelling of 210111102021013 in words is "two hundred ten trillion, one hundred eleven billion, one hundred two million, twenty-one thousand, thirteen".