21113203330433 has 8 divisors (see below), whose sum is σ = 21322969113600. Its totient is φ = 20903451746800.

The previous prime is 21113203330421. The next prime is 21113203330459. The reversal of 21113203330433 is 33403330231112.

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-21113203330433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113203330396 and 21113203330405.

It is not an unprimeable number, because it can be changed into a prime (21113203330133) 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, 548783 + ... + 6521316.

It is an arithmetic number, because the mean of its divisors is an integer number (2665371139200).

Almost surely, 2^{21113203330433} is an apocalyptic number.

It is an amenable number.

21113203330433 is a deficient number, since it is larger than the sum of its proper divisors (209765783167).

21113203330433 is a wasteful number, since it uses less digits than its factorization.

21113203330433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099767.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21113203330433 its reverse (33403330231112), we get a palindrome (54516533561545).

The spelling of 21113203330433 in words is "twenty-one trillion, one hundred thirteen billion, two hundred three million, three hundred thirty thousand, four hundred thirty-three".