21101113330 has 128 divisors (see below), whose sum is σ = 44137322496. Its totient is φ = 7187980800.

The previous prime is 21101113301. The next prime is 21101113339. The reversal of 21101113330 is 3331110112.

It is not an unprimeable number, because it can be changed into a prime (21101113339) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47632089 + ... + 47632531.

It is an arithmetic number, because the mean of its divisors is an integer number (344822832).

Almost surely, 2^21101113330 is an apocalyptic number.

21101113330 is an abundant number, since it is smaller than the sum of its proper divisors (23036209166).

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

21101113330 is a wasteful number, since it uses less digits than its factorization.

21101113330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21101113330 its reverse (3331110112), we get a palindrome (24432223442).

It can be divided in two parts, 21101 and 113330, that added together give a palindrome (134431).

The spelling of 21101113330 in words is "twenty-one billion, one hundred one million, one hundred thirteen thousand, three hundred thirty".