21233343324401 has 24 divisors (see below), whose sum is σ = 24583561351104. Its totient is φ = 18224813410560.

The previous prime is 21233343324343. The next prime is 21233343324419. The reversal of 21233343324401 is 10442334333212.

It is not a de Polignac number, because 21233343324401 - 2³⁴ = 21216163455217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21233343324491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33734405 + ... + 34358066.

It is an arithmetic number, because the mean of its divisors is an integer number (1024315056296).

Almost surely, 2^{21233343324401} is an apocalyptic number.

It is an amenable number.

21233343324401 is a deficient number, since it is larger than the sum of its proper divisors (3350218026703).

21233343324401 is a wasteful number, since it uses less digits than its factorization.

21233343324401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68092601 (or 68092584 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 21233343324401 its reverse (10442334333212), we get a palindrome (31675677657613).

The spelling of 21233343324401 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred forty-three million, three hundred twenty-four thousand, four hundred one".