21301003120 has 40 divisors (see below), whose sum is σ = 49532548464. Its totient is φ = 8519073792.

The previous prime is 21301003117. The next prime is 21301003127. The reversal of 21301003120 is 2130010312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 21301003120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301003127) 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 7 ways as a sum of consecutive naturals, for example, 618187 + ... + 651733.

Almost surely, 2^21301003120 is an apocalyptic number.

21301003120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301003120 is an abundant number, since it is smaller than the sum of its proper divisors (28231545344).

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

21301003120 is a wasteful number, since it uses less digits than its factorization.

21301003120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41497 (or 41491 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21301003120 its reverse (2130010312), we get a palindrome (23431013432).

The spelling of 21301003120 in words is "twenty-one billion, three hundred one million, three thousand, one hundred twenty".