201111221020011 has 32 divisors (see below), whose sum is σ = 278636863057920. Its totient is φ = 128887354224000.

The previous prime is 201111221019983. The next prime is 201111221020051. The reversal of 201111221020011 is 110020122111102.

It is a happy number.

It is not a de Polignac number, because 201111221020011 - 2¹⁰ = 201111221018987 is a prime.

It is a super-3 number, since 3×201111221020011³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (201111221020051) 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, 921518941 + ... + 921737153.

It is an arithmetic number, because the mean of its divisors is an integer number (8707401970560).

Almost surely, 2^{201111221020011} is an apocalyptic number.

201111221020011 is a deficient number, since it is larger than the sum of its proper divisors (77525642037909).

201111221020011 is a wasteful number, since it uses less digits than its factorization.

201111221020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284027.

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

Adding to 201111221020011 its reverse (110020122111102), we get a palindrome (311131343131113).

The spelling of 201111221020011 in words is "two hundred one trillion, one hundred eleven billion, two hundred twenty-one million, twenty thousand, eleven".