21003320023331 has 8 divisors (see below), whose sum is σ = 21251466720528. Its totient is φ = 20756503872000.

The previous prime is 21003320023229. The next prime is 21003320023339. The reversal of 21003320023331 is 13332002330012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21003320023331 is a prime.

It is a super-2 number, since 2×21003320023331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21003320023297 and 21003320023306.

It is not an unprimeable number, because it can be changed into a prime (21003320023339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332604710 + ... + 332667851.

It is an arithmetic number, because the mean of its divisors is an integer number (2656433340066).

Almost surely, 2^{21003320023331} is an apocalyptic number.

21003320023331 is a deficient number, since it is larger than the sum of its proper divisors (248146697197).

21003320023331 is a wasteful number, since it uses less digits than its factorization.

21003320023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665272933.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21003320023331 its reverse (13332002330012), we get a palindrome (34335322353343).

The spelling of 21003320023331 in words is "twenty-one trillion, three billion, three hundred twenty million, twenty-three thousand, three hundred thirty-one".