21233320001 has 4 divisors (see below), whose sum is σ = 21431762352. Its totient is φ = 21034877652.

The previous prime is 21233319971. The next prime is 21233320013. The reversal of 21233320001 is 10002333212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21233320001 - 2⁶ = 21233319937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233320061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99221015 + ... + 99221228.

It is an arithmetic number, because the mean of its divisors is an integer number (5357940588).

Almost surely, 2^21233320001 is an apocalyptic number.

It is an amenable number.

21233320001 is a deficient number, since it is larger than the sum of its proper divisors (198442351).

21233320001 is a wasteful number, since it uses less digits than its factorization.

21233320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198442350.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21233320001 its reverse (10002333212), we get a palindrome (31235653213).

The spelling of 21233320001 in words is "twenty-one billion, two hundred thirty-three million, three hundred twenty thousand, one".