21110100011 has 16 divisors (see below), whose sum is σ = 28343632128. Its totient is φ = 15184087200.

The previous prime is 21110099971. The next prime is 21110100023. The reversal of 21110100011 is 11000101112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21110100011 - 2¹⁰ = 21110098987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110100061) 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, 10543505 + ... + 10545506.

It is an arithmetic number, because the mean of its divisors is an integer number (1771477008).

Almost surely, 2^21110100011 is an apocalyptic number.

21110100011 is a deficient number, since it is larger than the sum of its proper divisors (7233532117).

21110100011 is a wasteful number, since it uses less digits than its factorization.

21110100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21089042.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 21110100011 its reverse (11000101112), we get a palindrome (32110201123).

It can be divided in two parts, 21110 and 100011, that added together give a palindrome (121121).

The spelling of 21110100011 in words is "twenty-one billion, one hundred ten million, one hundred thousand, eleven".