210221102101013 has 2 divisors, whose sum is σ = 210221102101014. Its totient is φ = 210221102101012.

The previous prime is 210221102100937. The next prime is 210221102101033. The reversal of 210221102101013 is 310101201122012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112080715365124 + 98140386735889 = 10586818^2 + 9906583^2 .

It is a cyclic number.

It is not a de Polignac number, because 210221102101013 - 2¹² = 210221102096917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210221102100982 and 210221102101000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210221102101033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110551050506 + 105110551050507.

It is an arithmetic number, because the mean of its divisors is an integer number (105110551050507).

Almost surely, 2^{210221102101013} is an apocalyptic number.

It is an amenable number.

210221102101013 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221102101013 is an equidigital number, since it uses as much as digits as its factorization.

210221102101013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 210221102101013 its reverse (310101201122012), we get a palindrome (520322303223025).

The spelling of 210221102101013 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred two million, one hundred one thousand, thirteen".