10003100133721 has 2 divisors, whose sum is σ = 10003100133722. Its totient is φ = 10003100133720.

The previous prime is 10003100133713. The next prime is 10003100133731. The reversal of 10003100133721 is 12733100130001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8949939806025 + 1053160327696 = 2991645^2 + 1026236^2 .

It is a cyclic number.

It is not a de Polignac number, because 10003100133721 - 2³ = 10003100133713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10003100133692 and 10003100133701.

It is not a weakly prime, because it can be changed into another prime (10003100133731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001550066860 + 5001550066861.

It is an arithmetic number, because the mean of its divisors is an integer number (5001550066861).

Almost surely, 2^{10003100133721} is an apocalyptic number.

It is an amenable number.

10003100133721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10003100133721 is an equidigital number, since it uses as much as digits as its factorization.

10003100133721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

Adding to 10003100133721 its reverse (12733100130001), we get a palindrome (22736200263722).

The spelling of 10003100133721 in words is "ten trillion, three billion, one hundred million, one hundred thirty-three thousand, seven hundred twenty-one".