21301121120 has 48 divisors (see below), whose sum is σ = 50373005760. Its totient is φ = 8512134144.

The previous prime is 21301121113. The next prime is 21301121129. The reversal of 21301121120 is 2112110312.

It is a junction number, because it is equal to n+sod(n) for n = 21301121095 and 21301121104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301121129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100841 + ... + 229719.

It is an arithmetic number, because the mean of its divisors is an integer number (1049437620).

Almost surely, 2^21301121120 is an apocalyptic number.

21301121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301121120 is an abundant number, since it is smaller than the sum of its proper divisors (29071884640).

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

21301121120 is a wasteful number, since it uses less digits than its factorization.

21301121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129927 (or 129919 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21301121120 its reverse (2112110312), we get a palindrome (23413231432).

The spelling of 21301121120 in words is "twenty-one billion, three hundred one million, one hundred twenty-one thousand, one hundred twenty".