21233111130 has 384 divisors, whose sum is σ = 70311960576. Its totient is φ = 4318272000.

The previous prime is 21233111093. The next prime is 21233111147. The reversal of 21233111130 is 3111133212.

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 (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 107782192 + ... + 107782388.

It is an arithmetic number, because the mean of its divisors is an integer number (183104064).

Almost surely, 2^21233111130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21233111130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35155980288).

21233111130 is an abundant number, since it is smaller than the sum of its proper divisors (49078849446).

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

21233111130 is a wasteful number, since it uses less digits than its factorization.

21233111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 479 counting only the distinct ones).

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

Adding to 21233111130 its reverse (3111133212), we get a palindrome (24344244342).

The spelling of 21233111130 in words is "twenty-one billion, two hundred thirty-three million, one hundred eleven thousand, one hundred thirty".