21100200011 has 16 divisors (see below), whose sum is σ = 23340856320. Its totient is φ = 18914470080.

The previous prime is 21100200007. The next prime is 21100200019. The reversal of 21100200011 is 11000200112.

It is not a de Polignac number, because 21100200011 - 2² = 21100200007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100200019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329930 + ... + 388656.

It is an arithmetic number, because the mean of its divisors is an integer number (1458803520).

Almost surely, 2^21100200011 is an apocalyptic number.

21100200011 is a deficient number, since it is larger than the sum of its proper divisors (2240656309).

21100200011 is a wasteful number, since it uses less digits than its factorization.

21100200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59194.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21100200011 its reverse (11000200112), we get a palindrome (32100400123).

The spelling of 21100200011 in words is "twenty-one billion, one hundred million, two hundred thousand, eleven".