21101200233 has 8 divisors (see below), whose sum is σ = 28895337408. Its totient is φ = 13687264944.

The previous prime is 21101200231. The next prime is 21101200283. The reversal of 21101200233 is 33200210112.

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

It is not a de Polignac number, because 21101200233 - 2¹ = 21101200231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21101200231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95050341 + ... + 95050562.

It is an arithmetic number, because the mean of its divisors is an integer number (3611917176).

Almost surely, 2^21101200233 is an apocalyptic number.

It is an amenable number.

21101200233 is a deficient number, since it is larger than the sum of its proper divisors (7794137175).

21101200233 is a wasteful number, since it uses less digits than its factorization.

21101200233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190100943.

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

Adding to 21101200233 its reverse (33200210112), we get a palindrome (54301410345).

The spelling of 21101200233 in words is "twenty-one billion, one hundred one million, two hundred thousand, two hundred thirty-three".