11201111202021 has 24 divisors (see below), whose sum is σ = 16172348749056. Its totient is φ = 6892850764800.

The previous prime is 11201111202011. The next prime is 11201111202119. The reversal of 11201111202021 is 12020211110211.

It is a happy number.

11201111202021 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 11201111202021 - 2⁵ = 11201111201989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201111202011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28145221 + ... + 28540421.

It is an arithmetic number, because the mean of its divisors is an integer number (673847864544).

Almost surely, 2^{11201111202021} is an apocalyptic number.

It is an amenable number.

11201111202021 is a deficient number, since it is larger than the sum of its proper divisors (4971237547035).

11201111202021 is a wasteful number, since it uses less digits than its factorization.

11201111202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451133 (or 451120 counting only the distinct ones).

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

Adding to 11201111202021 its reverse (12020211110211), we get a palindrome (23221322312232).

The spelling of 11201111202021 in words is "eleven trillion, two hundred one billion, one hundred eleven million, two hundred two thousand, twenty-one".