21030333301 has 2 divisors, whose sum is σ = 21030333302. Its totient is φ = 21030333300.

The previous prime is 21030333299. The next prime is 21030333341. The reversal of 21030333301 is 10333303012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13940524900 + 7089808401 = 118070^2 + 84201^2 .

It is a cyclic number.

It is not a de Polignac number, because 21030333301 - 2¹ = 21030333299 is a prime.

It is a super-2 number, since 2×21030333301² (a number of 21 digits) contains 22 as substring.

Together with 21030333299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030333341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515166650 + 10515166651.

It is an arithmetic number, because the mean of its divisors is an integer number (10515166651).

Almost surely, 2^21030333301 is an apocalyptic number.

It is an amenable number.

21030333301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030333301 is an equidigital number, since it uses as much as digits as its factorization.

21030333301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 21030333301 its reverse (10333303012), we get a palindrome (31363636313).

The spelling of 21030333301 in words is "twenty-one billion, thirty million, three hundred thirty-three thousand, three hundred one".