21033132123200 has 504 divisors, whose sum is σ = 53792756918208. Its totient is φ = 8092888739840.

The previous prime is 21033132123187. The next prime is 21033132123239. The reversal of 21033132123200 is 232123133012.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 79973886269 + ... + 79973886531.

It is an arithmetic number, because the mean of its divisors is an integer number (106731660552).

Almost surely, 2^{21033132123200} is an apocalyptic number.

21033132123200 is a gapful number since it is divisible by the number (20) 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 21033132123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26896378459104).

21033132123200 is an abundant number, since it is smaller than the sum of its proper divisors (32759624795008).

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

21033132123200 is a wasteful number, since it uses less digits than its factorization.

21033132123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21033132123200 its reverse (232123133012), we get a palindrome (21265255256212).

The spelling of 21033132123200 in words is "twenty-one trillion, thirty-three billion, one hundred thirty-two million, one hundred twenty-three thousand, two hundred".