21330305010 has 96 divisors (see below), whose sum is σ = 65094561792. Its totient is φ = 4743722880.

The previous prime is 21330304999. The next prime is 21330305033. The reversal of 21330305010 is 1050303312.

21330305010 is a `hidden beast` number, since 2 + 133 + 0 + 30 + 501 + 0 = 666.

It is a super-2 number, since 2×21330305010² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 434226 + ... + 480845.

It is an arithmetic number, because the mean of its divisors is an integer number (678068352).

Almost surely, 2^21330305010 is an apocalyptic number.

21330305010 is an abundant number, since it is smaller than the sum of its proper divisors (43764256782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21330305010 is a wasteful number, since it uses less digits than its factorization.

21330305010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915128 (or 915125 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

Adding to 21330305010 its reverse (1050303312), we get a palindrome (22380608322).

The spelling of 21330305010 in words is "twenty-one billion, three hundred thirty million, three hundred five thousand, ten".