21231301200032 has 192 divisors, whose sum is σ = 53804780789760. Its totient is φ = 8003534054400.

The previous prime is 21231301199981. The next prime is 21231301200079. The reversal of 21231301200032 is 23000210313212.

It is a junction number, because it is equal to n+sod(n) for n = 21231301199977 and 21231301200013.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436663019 + ... + 436711637.

It is an arithmetic number, because the mean of its divisors is an integer number (280233233280).

Almost surely, 2^{21231301200032} is an apocalyptic number.

21231301200032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21231301200032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26902390394880).

21231301200032 is an abundant number, since it is smaller than the sum of its proper divisors (32573479589728).

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

21231301200032 is a wasteful number, since it uses less digits than its factorization.

21231301200032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54395 (or 54387 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21231301200032 its reverse (23000210313212), we get a palindrome (44231511513244).

The spelling of 21231301200032 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred one million, two hundred thousand, thirty-two".