21330001230 has 16 divisors (see below), whose sum is σ = 51192003024. Its totient is φ = 5688000320.

The previous prime is 21330001229. The next prime is 21330001289. The reversal of 21330001230 is 3210003312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

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, 355499991 + ... + 355500050.

It is an arithmetic number, because the mean of its divisors is an integer number (3199500189).

Almost surely, 2^21330001230 is an apocalyptic number.

21330001230 is an abundant number, since it is smaller than the sum of its proper divisors (29862001794).

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

21330001230 is a wasteful number, since it uses less digits than its factorization.

21330001230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711000051.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21330001230 its reverse (3210003312), we get a palindrome (24540004542).

The spelling of 21330001230 in words is "twenty-one billion, three hundred thirty million, one thousand, two hundred thirty".