210322123213 has 4 divisors (see below), whose sum is σ = 210790547100. Its totient is φ = 209853699328.

The previous prime is 210322123171. The next prime is 210322123223. The reversal of 210322123213 is 312321223012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177007842729 + 33314280484 = 420723^2 + 182522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210322123213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210322123223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234211270 + ... + 234212167.

It is an arithmetic number, because the mean of its divisors is an integer number (52697636775).

Almost surely, 2^210322123213 is an apocalyptic number.

It is an amenable number.

210322123213 is a deficient number, since it is larger than the sum of its proper divisors (468423887).

210322123213 is an equidigital number, since it uses as much as digits as its factorization.

210322123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468423886.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 210322123213 its reverse (312321223012), we get a palindrome (522643346225).

The spelling of 210322123213 in words is "two hundred ten billion, three hundred twenty-two million, one hundred twenty-three thousand, two hundred thirteen".