11111221331041 has 16 divisors (see below), whose sum is σ = 12118177442560. Its totient is φ = 10126031460480.

The previous prime is 11111221331009. The next prime is 11111221331051. The reversal of 11111221331041 is 14013312211111.

It is not a de Polignac number, because 11111221331041 - 2⁵ = 11111221331009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111221331051) 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, 16002706 + ... + 16682596.

It is an arithmetic number, because the mean of its divisors is an integer number (757386090160).

Almost surely, 2^{11111221331041} is an apocalyptic number.

It is an amenable number.

11111221331041 is a deficient number, since it is larger than the sum of its proper divisors (1006956111519).

11111221331041 is a wasteful number, since it uses less digits than its factorization.

11111221331041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695896.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 11111221331041 its reverse (14013312211111), we get a palindrome (25124533542152).

The spelling of 11111221331041 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, three hundred thirty-one thousand, forty-one".