21200011233 has 8 divisors (see below), whose sum is σ = 28267440096. Its totient is φ = 14132961600.

The previous prime is 21200011229. The next prime is 21200011253. The reversal of 21200011233 is 33211000212.

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

It is not a de Polignac number, because 21200011233 - 2² = 21200011229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200011223) 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, 83593 + ... + 222233.

It is an arithmetic number, because the mean of its divisors is an integer number (3533430012).

Almost surely, 2^21200011233 is an apocalyptic number.

It is an amenable number.

21200011233 is a deficient number, since it is larger than the sum of its proper divisors (7067428863).

21200011233 is a wasteful number, since it uses less digits than its factorization.

21200011233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189615.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21200011233 its reverse (33211000212), we get a palindrome (54411011445).

The spelling of 21200011233 in words is "twenty-one billion, two hundred million, eleven thousand, two hundred thirty-three".