133003300021 has 2 divisors, whose sum is σ = 133003300022. Its totient is φ = 133003300020.

The previous prime is 133003300019. The next prime is 133003300037. The reversal of 133003300021 is 120003300331.

It is an a-pointer prime, because the next prime (133003300037) can be obtained adding 133003300021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121347722500 + 11655577521 = 348350^2 + 107961^2 .

It is a cyclic number.

It is not a de Polignac number, because 133003300021 - 2¹ = 133003300019 is a prime.

It is a super-2 number, since 2×133003300021² (a number of 23 digits) contains 22 as substring.

Together with 133003300019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 133003299968 and 133003300004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133003300051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66501650010 + 66501650011.

It is an arithmetic number, because the mean of its divisors is an integer number (66501650011).

Almost surely, 2^133003300021 is an apocalyptic number.

It is an amenable number.

133003300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

133003300021 is an equidigital number, since it uses as much as digits as its factorization.

133003300021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 133003300021 its reverse (120003300331), we get a palindrome (253006600352).

The spelling of 133003300021 in words is "one hundred thirty-three billion, three million, three hundred thousand, twenty-one".