21043041032032 has 24 divisors (see below), whose sum is σ = 41482081501056. Its totient is φ = 10507909222272.

The previous prime is 21043041031949. The next prime is 21043041032081. The reversal of 21043041032032 is 23023014034012.

It is a junction number, because it is equal to n+sod(n) for n = 21043041031988 and 21043041032006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425327808 + ... + 425377279.

It is an arithmetic number, because the mean of its divisors is an integer number (1728420062544).

Almost surely, 2^{21043041032032} is an apocalyptic number.

It is an amenable number.

21043041032032 is a deficient number, since it is larger than the sum of its proper divisors (20439040469024).

21043041032032 is an equidigital number, since it uses as much as digits as its factorization.

21043041032032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850705870 (or 850705862 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21043041032032 its reverse (23023014034012), we get a palindrome (44066055066044).

The spelling of 21043041032032 in words is "twenty-one trillion, forty-three billion, forty-one million, thirty-two thousand, thirty-two".