21001112330 has 64 divisors (see below), whose sum is σ = 42069628800. Its totient is φ = 7483795200.

The previous prime is 21001112261. The next prime is 21001112339. The reversal of 21001112330 is 3321110012.

It is not an unprimeable number, because it can be changed into a prime (21001112339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1853021 + ... + 1864319.

It is an arithmetic number, because the mean of its divisors is an integer number (657337950).

Almost surely, 2^21001112330 is an apocalyptic number.

21001112330 is an abundant number, since it is smaller than the sum of its proper divisors (21068516470).

21001112330 is a wasteful number, since it uses less digits than its factorization.

21001112330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21001112330 its reverse (3321110012), we get a palindrome (24322222342).

It can be divided in two parts, 21001 and 112330, that added together give a palindrome (133331).

The spelling of 21001112330 in words is "twenty-one billion, one million, one hundred twelve thousand, three hundred thirty".