102003313021 has 2 divisors, whose sum is σ = 102003313022. Its totient is φ = 102003313020.

The previous prime is 102003313007. The next prime is 102003313033. The reversal of 102003313021 is 120313300201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63277402500 + 38725910521 = 251550^2 + 196789^2 .

It is a cyclic number.

It is not a de Polignac number, because 102003313021 - 2²⁹ = 101466442109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102003312986 and 102003313004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102003313001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51001656510 + 51001656511.

It is an arithmetic number, because the mean of its divisors is an integer number (51001656511).

Almost surely, 2^102003313021 is an apocalyptic number.

It is an amenable number.

102003313021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102003313021 is an equidigital number, since it uses as much as digits as its factorization.

102003313021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 102003313021 its reverse (120313300201), we get a palindrome (222316613222).

The spelling of 102003313021 in words is "one hundred two billion, three million, three hundred thirteen thousand, twenty-one".