21021023232032 has 12 divisors (see below), whose sum is σ = 41385139488126. Its totient is φ = 10510511616000.

The previous prime is 21021023232007. The next prime is 21021023232047. The reversal of 21021023232032 is 23023232012012.

It can be written as a sum of positive squares in only one way, i.e., 19649042060176 + 1371981171856 = 4432724^2 + 1171316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21021023231989 and 21021023232007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328453487969 + ... + 328453488032.

Almost surely, 2^{21021023232032} is an apocalyptic number.

It is an amenable number.

21021023232032 is a deficient number, since it is larger than the sum of its proper divisors (20364116256094).

21021023232032 is an equidigital number, since it uses as much as digits as its factorization.

21021023232032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656906976011 (or 656906976003 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21021023232032 its reverse (23023232012012), we get a palindrome (44044255244044).

The spelling of 21021023232032 in words is "twenty-one trillion, twenty-one billion, twenty-three million, two hundred thirty-two thousand, thirty-two".