120102310021 has 2 divisors, whose sum is σ = 120102310022. Its totient is φ = 120102310020.

The previous prime is 120102310019. The next prime is 120102310067. The reversal of 120102310021 is 120013201021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110032187521 + 10070122500 = 331711^2 + 100350^2 .

It is a cyclic number.

It is not a de Polignac number, because 120102310021 - 2¹ = 120102310019 is a prime.

Together with 120102310019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 120102309983 and 120102310010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120102310091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60051155010 + 60051155011.

It is an arithmetic number, because the mean of its divisors is an integer number (60051155011).

Almost surely, 2^120102310021 is an apocalyptic number.

It is an amenable number.

120102310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120102310021 is an equidigital number, since it uses as much as digits as its factorization.

120102310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 120102310021 its reverse (120013201021), we get a palindrome (240115511042).

The spelling of 120102310021 in words is "one hundred twenty billion, one hundred two million, three hundred ten thousand, twenty-one".