102020023321 has 2 divisors, whose sum is σ = 102020023322. Its totient is φ = 102020023320.

The previous prime is 102020023277. The next prime is 102020023337. The reversal of 102020023321 is 123320020201.

It is an a-pointer prime, because the next prime (102020023337) can be obtained adding 102020023321 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88886863321 + 13133160000 = 298139^2 + 114600^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020023321 - 2²¹ = 102017926169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020023295 and 102020023304.

It is not a weakly prime, because it can be changed into another prime (102020023351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010011660 + 51010011661.

It is an arithmetic number, because the mean of its divisors is an integer number (51010011661).

Almost surely, 2^102020023321 is an apocalyptic number.

It is an amenable number.

102020023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020023321 is an equidigital number, since it uses as much as digits as its factorization.

102020023321 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 16.

Adding to 102020023321 its reverse (123320020201), we get a palindrome (225340043522).

The spelling of 102020023321 in words is "one hundred two billion, twenty million, twenty-three thousand, three hundred twenty-one".