21112331130 has 64 divisors (see below), whose sum is σ = 61417699200. Its totient is φ = 5118140160.

The previous prime is 21112331117. The next prime is 21112331147. The reversal of 21112331130 is 3113321112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3551295 + ... + 3557234.

It is an arithmetic number, because the mean of its divisors is an integer number (959651550).

Almost surely, 2^21112331130 is an apocalyptic number.

21112331130 is an abundant number, since it is smaller than the sum of its proper divisors (40305368070).

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

21112331130 is a wasteful number, since it uses less digits than its factorization.

21112331130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108556 (or 7108550 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21112331130 its reverse (3113321112), we get a palindrome (24225652242).

The spelling of 21112331130 in words is "twenty-one billion, one hundred twelve million, three hundred thirty-one thousand, one hundred thirty".