102022321021 has 2 divisors, whose sum is σ = 102022321022. Its totient is φ = 102022321020.

The previous prime is 102022320991. The next prime is 102022321067. The reversal of 102022321021 is 120123220201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78921664900 + 23100656121 = 280930^2 + 151989^2 .

It is an emirp because it is prime and its reverse (120123220201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102022321021 - 2⁷ = 102022320893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102022320986 and 102022321004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102022325021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011160510 + 51011160511.

It is an arithmetic number, because the mean of its divisors is an integer number (51011160511).

Almost surely, 2^102022321021 is an apocalyptic number.

It is an amenable number.

102022321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102022321021 is an equidigital number, since it uses as much as digits as its factorization.

102022321021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 102022321021 its reverse (120123220201), we get a palindrome (222145541222).

The spelling of 102022321021 in words is "one hundred two billion, twenty-two million, three hundred twenty-one thousand, twenty-one".