21132342352000 has 128 divisors (see below), whose sum is σ = 57316676302080. Its totient is φ = 7684488064000.

The previous prime is 21132342351997. The next prime is 21132342352007. The reversal of 21132342352000 is 25324323112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 21132342352000.

It is not an unprimeable number, because it can be changed into a prime (21132342352007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59859064 + ... + 60211063.

It is an arithmetic number, because the mean of its divisors is an integer number (447786533610).

Almost surely, 2^{21132342352000} is an apocalyptic number.

21132342352000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132342352000 is an abundant number, since it is smaller than the sum of its proper divisors (36184333950080).

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

21132342352000 is a wasteful number, since it uses less digits than its factorization.

21132342352000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120070167 (or 120070145 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21132342352000 its reverse (25324323112), we get a palindrome (21157666675112).

The spelling of 21132342352000 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred forty-two million, three hundred fifty-two thousand".