21021232123332 has 192 divisors, whose sum is σ = 62479284940800. Its totient is φ = 5987354250240.

The previous prime is 21021232123223. The next prime is 21021232123337. The reversal of 21021232123332 is 23332123212012.

21021232123332 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 1 + 2 + 321 + 2 + 3 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21021232123296 and 21021232123305.

It is not an unprimeable number, because it can be changed into a prime (21021232123337) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1171808419 + ... + 1171826357.

It is an arithmetic number, because the mean of its divisors is an integer number (325412942400).

Almost surely, 2^{21021232123332} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21021232123332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31239642470400).

21021232123332 is an abundant number, since it is smaller than the sum of its proper divisors (41458052817468).

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

21021232123332 is a wasteful number, since it uses less digits than its factorization.

21021232123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22703 (or 22695 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21021232123332 its reverse (23332123212012), we get a palindrome (44353355335344).

The spelling of 21021232123332 in words is "twenty-one trillion, twenty-one billion, two hundred thirty-two million, one hundred twenty-three thousand, three hundred thirty-two".