21024401120 has 24 divisors (see below), whose sum is σ = 49670148024. Its totient is φ = 8409760384.

The previous prime is 21024401119. The next prime is 21024401129. The reversal of 21024401120 is 2110442012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21024401129) 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 3 ways as a sum of consecutive naturals, for example, 65701094 + ... + 65701413.

It is an arithmetic number, because the mean of its divisors is an integer number (2069589501).

Almost surely, 2^21024401120 is an apocalyptic number.

21024401120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21024401120 is an abundant number, since it is smaller than the sum of its proper divisors (28645746904).

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

21024401120 is a wasteful number, since it uses less digits than its factorization.

21024401120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131402522 (or 131402514 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21024401120 its reverse (2110442012), we get a palindrome (23134843132).

The spelling of 21024401120 in words is "twenty-one billion, twenty-four million, four hundred one thousand, one hundred twenty".