21140403232000 has 144 divisors (see below), whose sum is σ = 56714417886672. Its totient is φ = 7805687193600.

The previous prime is 21140403231973. The next prime is 21140403232021. The reversal of 21140403232000 is 23230404112.

It can be written as a sum of positive squares in 8 ways, for example, as 13995859138816 + 7144544093184 = 3741104^2 + 2672928^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24993139 + ... + 25825138.

It is an arithmetic number, because the mean of its divisors is an integer number (393850124213).

Almost surely, 2^{21140403232000} is an apocalyptic number.

21140403232000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21140403232000 is an abundant number, since it is smaller than the sum of its proper divisors (35574014654672).

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

21140403232000 is an equidigital number, since it uses as much as digits as its factorization.

21140403232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50818321 (or 50818297 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21140403232000 its reverse (23230404112), we get a palindrome (21163633636112).

The spelling of 21140403232000 in words is "twenty-one trillion, one hundred forty billion, four hundred three million, two hundred thirty-two thousand".