21211110200011 has 8 divisors (see below), whose sum is σ = 21460308942240. Its totient is φ = 20962153050432.

The previous prime is 21211110199921. The next prime is 21211110200047. The reversal of 21211110200011 is 11000201111212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21211110200011 - 2²¹ = 21211108102859 is a prime.

It is a super-2 number, since 2×21211110200011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21211110199964 and 21211110200000.

It is not an unprimeable number, because it can be changed into a prime (21211110210011) 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, 60221535 + ... + 60572728.

It is an arithmetic number, because the mean of its divisors is an integer number (2682538617780).

Almost surely, 2^{21211110200011} is an apocalyptic number.

21211110200011 is a deficient number, since it is larger than the sum of its proper divisors (249198742229).

21211110200011 is a wasteful number, since it uses less digits than its factorization.

21211110200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120796325.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21211110200011 its reverse (11000201111212), we get a palindrome (32211311311223).

The spelling of 21211110200011 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, two hundred thousand, eleven".