21300003003337 has 2 divisors, whose sum is σ = 21300003003338. Its totient is φ = 21300003003336.

The previous prime is 21300003003317. The next prime is 21300003003341. The reversal of 21300003003337 is 73330030000312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20107475666496 + 1192527336841 = 4484136^2 + 1092029^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300003003337 - 2²³ = 21299994614729 is a prime.

It is a super-3 number, since 3×21300003003337³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21300003003317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650001501668 + 10650001501669.

It is an arithmetic number, because the mean of its divisors is an integer number (10650001501669).

Almost surely, 2^{21300003003337} is an apocalyptic number.

It is an amenable number.

21300003003337 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300003003337 is an equidigital number, since it uses as much as digits as its factorization.

21300003003337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 25.

Adding to 21300003003337 its reverse (73330030000312), we get a palindrome (94630033003649).

The spelling of 21300003003337 in words is "twenty-one trillion, three hundred billion, three million, three thousand, three hundred thirty-seven".