21100201113 has 4 divisors (see below), whose sum is σ = 28133601488. Its totient is φ = 14066800740.

The previous prime is 21100200997. The next prime is 21100201139. The reversal of 21100201113 is 31110200112.

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 not a de Polignac number, because 21100201113 - 2⁹ = 21100200601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100201163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516700183 + ... + 3516700188.

It is an arithmetic number, because the mean of its divisors is an integer number (7033400372).

Almost surely, 2^21100201113 is an apocalyptic number.

It is an amenable number.

21100201113 is a deficient number, since it is larger than the sum of its proper divisors (7033400375).

21100201113 is an equidigital number, since it uses as much as digits as its factorization.

21100201113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033400374.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21100201113 its reverse (31110200112), we get a palindrome (52210401225).

The spelling of 21100201113 in words is "twenty-one billion, one hundred million, two hundred one thousand, one hundred thirteen".