221201112011 has 8 divisors (see below), whose sum is σ = 245863329264. Its totient is φ = 197297732320.

The previous prime is 221201112007. The next prime is 221201112043. The reversal of 221201112011 is 110211102122.

221201112011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221201112011 - 2² = 221201112007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201112611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189708776 + ... + 189709941.

It is an arithmetic number, because the mean of its divisors is an integer number (30732916158).

Almost surely, 2^221201112011 is an apocalyptic number.

221201112011 is a deficient number, since it is larger than the sum of its proper divisors (24662217253).

221201112011 is a wasteful number, since it uses less digits than its factorization.

221201112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379418781.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221201112011 its reverse (110211102122), we get a palindrome (331412214133).

It can be divided in two parts, 22120111 and 2011, that added together give a palindrome (22122122).

The spelling of 221201112011 in words is "two hundred twenty-one billion, two hundred one million, one hundred twelve thousand, eleven".