210401221213 has 2 divisors, whose sum is σ = 210401221214. Its totient is φ = 210401221212.

The previous prime is 210401221153. The next prime is 210401221271. The reversal of 210401221213 is 312122104012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153477464644 + 56923756569 = 391762^2 + 238587^2 .

It is a cyclic number.

It is not a de Polignac number, because 210401221213 - 2²⁵ = 210367666781 is a prime.

It is a super-2 number, since 2×210401221213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210401221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105200610606 + 105200610607.

It is an arithmetic number, because the mean of its divisors is an integer number (105200610607).

Almost surely, 2^210401221213 is an apocalyptic number.

It is an amenable number.

210401221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

210401221213 is an equidigital number, since it uses as much as digits as its factorization.

210401221213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 210401221213 its reverse (312122104012), we get a palindrome (522523325225).

The spelling of 210401221213 in words is "two hundred ten billion, four hundred one million, two hundred twenty-one thousand, two hundred thirteen".