21033110111232 has 352 divisors, whose sum is σ = 61217241379200. Its totient is φ = 6412812779520.

The previous prime is 21033110111219. The next prime is 21033110111239. The reversal of 21033110111232 is 23211101133012.

It is a junction number, because it is equal to n+sod(n) for n = 21033110111199 and 21033110111208.

It is not an unprimeable number, because it can be changed into a prime (21033110111239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611037382 + ... + 611071802.

Almost surely, 2^{21033110111232} 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 21033110111232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30608620689600).

21033110111232 is an abundant number, since it is smaller than the sum of its proper divisors (40184131267968).

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

21033110111232 is an equidigital number, since it uses as much as digits as its factorization.

21033110111232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34530 (or 34474 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21033110111232 its reverse (23211101133012), we get a palindrome (44244211244244).

The spelling of 21033110111232 in words is "twenty-one trillion, thirty-three billion, one hundred ten million, one hundred eleven thousand, two hundred thirty-two".