21003333330232 has 192 divisors, whose sum is σ = 48262557369600. Its totient is φ = 8509438080000.

The previous prime is 21003333330227. The next prime is 21003333330263. The reversal of 21003333330232 is 23203333330012.

It is a super-2 number, since 2×21003333330232² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21003333330232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1016460333 + ... + 1016480995.

It is an arithmetic number, because the mean of its divisors is an integer number (251367486300).

Almost surely, 2^{21003333330232} is an apocalyptic number.

21003333330232 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 21003333330232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24131278684800).

21003333330232 is an abundant number, since it is smaller than the sum of its proper divisors (27259224039368).

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

21003333330232 is a wasteful number, since it uses less digits than its factorization.

21003333330232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23978 (or 23963 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 28.

Adding to 21003333330232 its reverse (23203333330012), we get a palindrome (44206666660244).

The spelling of 21003333330232 in words is "twenty-one trillion, three billion, three hundred thirty-three million, three hundred thirty thousand, two hundred thirty-two".