21330330107 has 12 divisors (see below), whose sum is σ = 22783327560. Its totient is φ = 19964187072.

The previous prime is 21330330089. The next prime is 21330330113. The reversal of 21330330107 is 70103303312.

It is a happy number.

It is not a de Polignac number, because 21330330107 - 2¹⁴ = 21330313723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330330907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325982 + ... + 385907.

It is an arithmetic number, because the mean of its divisors is an integer number (1898610630).

Almost surely, 2^21330330107 is an apocalyptic number.

21330330107 is a deficient number, since it is larger than the sum of its proper divisors (1452997453).

21330330107 is an equidigital number, since it uses as much as digits as its factorization.

21330330107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712010 (or 711991 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 23.

Adding to 21330330107 its reverse (70103303312), we get a palindrome (91433633419).

The spelling of 21330330107 in words is "twenty-one billion, three hundred thirty million, three hundred thirty thousand, one hundred seven".