21103331130 has 96 divisors (see below), whose sum is σ = 63316041984. Its totient is φ = 4776772608.

The previous prime is 21103331111. The next prime is 21103331143. The reversal of 21103331130 is 3113330112.

It is a happy number.

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, 97719 + ... + 227498.

It is an arithmetic number, because the mean of its divisors is an integer number (659542104).

Almost surely, 2^21103331130 is an apocalyptic number.

21103331130 is an abundant number, since it is smaller than the sum of its proper divisors (42212710854).

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

21103331130 is a wasteful number, since it uses less digits than its factorization.

21103331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325340 (or 325337 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21103331130 its reverse (3113330112), we get a palindrome (24216661242).

The spelling of 21103331130 in words is "twenty-one billion, one hundred three million, three hundred thirty-one thousand, one hundred thirty".