21301124130 has 96 divisors (see below), whose sum is σ = 65065291200. Its totient is φ = 4766682240.

The previous prime is 21301124101. The next prime is 21301124137. The reversal of 21301124130 is 3142110312.

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

It is not an unprimeable number, because it can be changed into a prime (21301124137) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 814680 + ... + 840419.

It is an arithmetic number, because the mean of its divisors is an integer number (677763450).

Almost surely, 2^21301124130 is an apocalyptic number.

21301124130 is an abundant number, since it is smaller than the sum of its proper divisors (43764167070).

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

21301124130 is a wasteful number, since it uses less digits than its factorization.

21301124130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655136 (or 1655133 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21301124130 its reverse (3142110312), we get a palindrome (24443234442).

The spelling of 21301124130 in words is "twenty-one billion, three hundred one million, one hundred twenty-four thousand, one hundred thirty".