102320021213 has 2 divisors, whose sum is σ = 102320021214. Its totient is φ = 102320021212.

The previous prime is 102320021207. The next prime is 102320021227. The reversal of 102320021213 is 312120023201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54353327044 + 47966694169 = 233138^2 + 219013^2 .

It is a cyclic number.

It is not a de Polignac number, because 102320021213 - 2¹⁶ = 102319955677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102320021191 and 102320021200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102320021273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51160010606 + 51160010607.

It is an arithmetic number, because the mean of its divisors is an integer number (51160010607).

Almost surely, 2^102320021213 is an apocalyptic number.

It is an amenable number.

102320021213 is a deficient number, since it is larger than the sum of its proper divisors (1).

102320021213 is an equidigital number, since it uses as much as digits as its factorization.

102320021213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102320021213 its reverse (312120023201), we get a palindrome (414440044414).

The spelling of 102320021213 in words is "one hundred two billion, three hundred twenty million, twenty-one thousand, two hundred thirteen".