21010333330 has 16 divisors (see below), whose sum is σ = 43221257280. Its totient is φ = 7203542832.

The previous prime is 21010333321. The next prime is 21010333349. The reversal of 21010333330 is 3333301012.

It is a junction number, because it is equal to n+sod(n) for n = 21010333298 and 21010333307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150073740 + ... + 150073879.

It is an arithmetic number, because the mean of its divisors is an integer number (2701328580).

Almost surely, 2^21010333330 is an apocalyptic number.

21010333330 is an abundant number, since it is smaller than the sum of its proper divisors (22210923950).

21010333330 is a wasteful number, since it uses less digits than its factorization.

21010333330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300147633.

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

Adding to 21010333330 its reverse (3333301012), we get a palindrome (24343634342).

The spelling of 21010333330 in words is "twenty-one billion, ten million, three hundred thirty-three thousand, three hundred thirty".