210001021120213 has 2 divisors, whose sum is σ = 210001021120214. Its totient is φ = 210001021120212.

The previous prime is 210001021120141. The next prime is 210001021120229. The reversal of 210001021120213 is 312021120100012.

It is an a-pointer prime, because the next prime (210001021120229) can be obtained adding 210001021120213 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180186003062244 + 29815018057969 = 13423338^2 + 5460313^2 .

It is a cyclic number.

It is not a de Polignac number, because 210001021120213 - 2²⁹ = 210000484249301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210001021126213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000510560106 + 105000510560107.

It is an arithmetic number, because the mean of its divisors is an integer number (105000510560107).

Almost surely, 2^{210001021120213} is an apocalyptic number.

It is an amenable number.

210001021120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001021120213 is an equidigital number, since it uses as much as digits as its factorization.

210001021120213 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 16.

Adding to 210001021120213 its reverse (312021120100012), we get a palindrome (522022141220225).

The spelling of 210001021120213 in words is "two hundred ten trillion, one billion, twenty-one million, one hundred twenty thousand, two hundred thirteen".