201121112011 has 8 divisors (see below), whose sum is σ = 208061349120. Its totient is φ = 194181210048.

The previous prime is 201121111969. The next prime is 201121112063. The reversal of 201121112011 is 110211121102.

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 201121112011 - 2⁷ = 201121111883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201121111982 and 201121112000.

It is not an unprimeable number, because it can be changed into a prime (201121112111) 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, 2119495 + ... + 2212351.

It is an arithmetic number, because the mean of its divisors is an integer number (26007668640).

Almost surely, 2^201121112011 is an apocalyptic number.

201121112011 is a deficient number, since it is larger than the sum of its proper divisors (6940237109).

201121112011 is an equidigital number, since it uses as much as digits as its factorization.

201121112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167573.

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

Adding to 201121112011 its reverse (110211121102), we get a palindrome (311332233113).

Subtracting from 201121112011 its reverse (110211121102), we obtain a palindrome (90909990909).

The spelling of 201121112011 in words is "two hundred one billion, one hundred twenty-one million, one hundred twelve thousand, eleven".