10120323221 has 2 divisors, whose sum is σ = 10120323222. Its totient is φ = 10120323220.

The previous prime is 10120323211. The next prime is 10120323247. The reversal of 10120323221 is 12232302101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5682898225 + 4437424996 = 75385^2 + 66614^2 .

It is an emirp because it is prime and its reverse (12232302101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10120323221 - 2¹⁰ = 10120322197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10120323221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120323211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060161610 + 5060161611.

It is an arithmetic number, because the mean of its divisors is an integer number (5060161611).

Almost surely, 2^10120323221 is an apocalyptic number.

It is an amenable number.

10120323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120323221 is an equidigital number, since it uses as much as digits as its factorization.

10120323221 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 10120323221 its reverse (12232302101), we get a palindrome (22352625322).

The spelling of 10120323221 in words is "ten billion, one hundred twenty million, three hundred twenty-three thousand, two hundred twenty-one".