21102001100211 has 16 divisors (see below), whose sum is σ = 28736672799744. Its totient is φ = 13767707421504.

The previous prime is 21102001100209. The next prime is 21102001100249. The reversal of 21102001100211 is 11200110020112.

It is not a de Polignac number, because 21102001100211 - 2¹ = 21102001100209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21102001100611) 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, 3291631 + ... + 7282776.

It is an arithmetic number, because the mean of its divisors is an integer number (1796042049984).

Almost surely, 2^{21102001100211} is an apocalyptic number.

21102001100211 is a deficient number, since it is larger than the sum of its proper divisors (7634671699533).

21102001100211 is a wasteful number, since it uses less digits than its factorization.

21102001100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10588610.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21102001100211 its reverse (11200110020112), we get a palindrome (32302111120323).

The spelling of 21102001100211 in words is "twenty-one trillion, one hundred two billion, one million, one hundred thousand, two hundred eleven".