11211221200101 has 32 divisors (see below), whose sum is σ = 16339955939328. Its totient is φ = 6795607008960.

The previous prime is 11211221200099. The next prime is 11211221200159. The reversal of 11211221200101 is 10100212211211.

It is a happy number.

11211221200101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11211221200101 - 2¹ = 11211221200099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211221200601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28671616 + ... + 29060006.

It is an arithmetic number, because the mean of its divisors is an integer number (510623623104).

Almost surely, 2^{11211221200101} is an apocalyptic number.

It is an amenable number.

11211221200101 is a deficient number, since it is larger than the sum of its proper divisors (5128734739227).

11211221200101 is a wasteful number, since it uses less digits than its factorization.

11211221200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399521.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211221200101 its reverse (10100212211211), we get a palindrome (21311433411312).

The spelling of 11211221200101 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-one million, two hundred thousand, one hundred one".