103313030021 has 2 divisors, whose sum is σ = 103313030022. Its totient is φ = 103313030020.

The previous prime is 103313029999. The next prime is 103313030027. The reversal of 103313030021 is 120030313301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95465550625 + 7847479396 = 308975^2 + 88586^2 .

It is a cyclic number.

It is not a de Polignac number, because 103313030021 - 2¹⁴ = 103313013637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103313030027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51656515010 + 51656515011.

It is an arithmetic number, because the mean of its divisors is an integer number (51656515011).

Almost surely, 2^103313030021 is an apocalyptic number.

It is an amenable number.

103313030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103313030021 is an equidigital number, since it uses as much as digits as its factorization.

103313030021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 103313030021 its reverse (120030313301), we get a palindrome (223343343322).

The spelling of 103313030021 in words is "one hundred three billion, three hundred thirteen million, thirty thousand, twenty-one".