103313012021 has 2 divisors, whose sum is σ = 103313012022. Its totient is φ = 103313012020.

The previous prime is 103313012003. The next prime is 103313012029. The reversal of 103313012021 is 120210313301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103150168900 + 162843121 = 321170^2 + 12761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103313012021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103313012029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51656506010 + 51656506011.

It is an arithmetic number, because the mean of its divisors is an integer number (51656506011).

Almost surely, 2^103313012021 is an apocalyptic number.

It is an amenable number.

103313012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103313012021 is an equidigital number, since it uses as much as digits as its factorization.

103313012021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 103313012021 its reverse (120210313301), we get a palindrome (223523325322).

The spelling of 103313012021 in words is "one hundred three billion, three hundred thirteen million, twelve thousand, twenty-one".