111411144221 has 16 divisors (see below), whose sum is σ = 122926407408. Its totient is φ = 100317388800.

The previous prime is 111411144217. The next prime is 111411144241. The reversal of 111411144221 is 122441114111.

It can be written as a sum of positive squares in 8 ways, for example, as 4229551225 + 107181592996 = 65035^2 + 327386^2 .

It is a cyclic number.

It is not a de Polignac number, because 111411144221 - 2² = 111411144217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111411144241) 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, 4871405 + ... + 4894221.

It is an arithmetic number, because the mean of its divisors is an integer number (7682900463).

Almost surely, 2^111411144221 is an apocalyptic number.

It is an amenable number.

111411144221 is a deficient number, since it is larger than the sum of its proper divisors (11515263187).

111411144221 is a wasteful number, since it uses less digits than its factorization.

111411144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32032.

The product of its digits is 256, while the sum is 23.

Adding to 111411144221 its reverse (122441114111), we get a palindrome (233852258332).

The spelling of 111411144221 in words is "one hundred eleven billion, four hundred eleven million, one hundred forty-four thousand, two hundred twenty-one".