21100211133 has 8 divisors (see below), whose sum is σ = 28134914496. Its totient is φ = 14066157600.

The previous prime is 21100211117. The next prime is 21100211137. The reversal of 21100211133 is 33111200112.

It is a happy number.

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

It is not a de Polignac number, because 21100211133 - 2⁴ = 21100211117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100211137) 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, 80833 + ... + 220758.

It is an arithmetic number, because the mean of its divisors is an integer number (3516864312).

Almost surely, 2^21100211133 is an apocalyptic number.

It is an amenable number.

21100211133 is a deficient number, since it is larger than the sum of its proper divisors (7034703363).

21100211133 is a wasteful number, since it uses less digits than its factorization.

21100211133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324915.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21100211133 its reverse (33111200112), we get a palindrome (54211411245).

The spelling of 21100211133 in words is "twenty-one billion, one hundred million, two hundred eleven thousand, one hundred thirty-three".