21033410330 has 32 divisors (see below), whose sum is σ = 38011982400. Its totient is φ = 8379689472.

The previous prime is 21033410269. The next prime is 21033410351. The reversal of 21033410330 is 3301433012.

It is a super-2 number, since 2×21033410330² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2816141 + ... + 2823599.

It is an arithmetic number, because the mean of its divisors is an integer number (1187874450).

Almost surely, 2^21033410330 is an apocalyptic number.

21033410330 is a deficient number, since it is larger than the sum of its proper divisors (16978572070).

21033410330 is a wasteful number, since it uses less digits than its factorization.

21033410330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8558.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21033410330 its reverse (3301433012), we get a palindrome (24334843342).

The spelling of 21033410330 in words is "twenty-one billion, thirty-three million, four hundred ten thousand, three hundred thirty".