210011221000913 has 2 divisors, whose sum is σ = 210011221000914. Its totient is φ = 210011221000912.

The previous prime is 210011221000897. The next prime is 210011221001003. The reversal of 210011221000913 is 319000122110012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202062159530449 + 7949061470464 = 14214857^2 + 2819408^2 .

It is a cyclic number.

It is not a de Polignac number, because 210011221000913 - 2⁴ = 210011221000897 is a prime.

It is not a weakly prime, because it can be changed into another prime (210011221000313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105005610500456 + 105005610500457.

It is an arithmetic number, because the mean of its divisors is an integer number (105005610500457).

Almost surely, 2^{210011221000913} is an apocalyptic number.

It is an amenable number.

210011221000913 is a deficient number, since it is larger than the sum of its proper divisors (1).

210011221000913 is an equidigital number, since it uses as much as digits as its factorization.

210011221000913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 210011221000913 its reverse (319000122110012), we get a palindrome (529011343110925).

The spelling of 210011221000913 in words is "two hundred ten trillion, eleven billion, two hundred twenty-one million, nine hundred thirteen", and thus it is an aban number.