303303300021 has 12 divisors (see below), whose sum is σ = 440895244972. Its totient is φ = 200914286976.

The previous prime is 303303299987. The next prime is 303303300029. The reversal of 303303300021 is 120003303303.

303303300021 is a `hidden beast` number, since 3 + 0 + 330 + 330 + 0 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 157203527121 + 146099772900 = 396489^2 + 382230^2 .

It is a de Polignac number, because none of the positive numbers 2^k-303303300021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 303303299967 and 303303300003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303303300029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107324596 + ... + 107327421.

Almost surely, 2^303303300021 is an apocalyptic number.

It is an amenable number.

303303300021 is a deficient number, since it is larger than the sum of its proper divisors (137591944951).

303303300021 is a wasteful number, since it uses less digits than its factorization.

303303300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214652180 (or 214652177 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

Adding to 303303300021 its reverse (120003303303), we get a palindrome (423306603324).

The spelling of 303303300021 in words is "three hundred three billion, three hundred three million, three hundred thousand, twenty-one".