210321232117 has 2 divisors, whose sum is σ = 210321232118. Its totient is φ = 210321232116.

The previous prime is 210321232103. The next prime is 210321232133. The reversal of 210321232117 is 711232123012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131711652241 + 78609579876 = 362921^2 + 280374^2 .

It is a cyclic number.

It is not a de Polignac number, because 210321232117 - 2³¹ = 208173748469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210321232091 and 210321232100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210321262117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105160616058 + 105160616059.

It is an arithmetic number, because the mean of its divisors is an integer number (105160616059).

Almost surely, 2^210321232117 is an apocalyptic number.

It is an amenable number.

210321232117 is a deficient number, since it is larger than the sum of its proper divisors (1).

210321232117 is an equidigital number, since it uses as much as digits as its factorization.

210321232117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 210321232117 its reverse (711232123012), we get a palindrome (921553355129).

The spelling of 210321232117 in words is "two hundred ten billion, three hundred twenty-one million, two hundred thirty-two thousand, one hundred seventeen".