221100112112011 has 16 divisors (see below), whose sum is σ = 243709856483328. Its totient is φ = 198910643932000.

The previous prime is 221100112111951. The next prime is 221100112112027. The reversal of 221100112112011 is 110211211001122.

It is not a de Polignac number, because 221100112112011 - 2³¹ = 221097964628363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221100112142011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47452651 + ... + 51903316.

It is an arithmetic number, because the mean of its divisors is an integer number (15231866030208).

Almost surely, 2^{221100112112011} is an apocalyptic number.

221100112112011 is a deficient number, since it is larger than the sum of its proper divisors (22609744371317).

221100112112011 is a wasteful number, since it uses less digits than its factorization.

221100112112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99358082.

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

Adding to 221100112112011 its reverse (110211211001122), we get a palindrome (331311323113133).

The spelling of 221100112112011 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twelve million, one hundred twelve thousand, eleven".