11331131121111 has 32 divisors (see below), whose sum is σ = 15316010297280. Its totient is φ = 7450883686400.

The previous prime is 11331131121083. The next prime is 11331131121143. The reversal of 11331131121111 is 11112113113311.

It is a cyclic number.

It is not a de Polignac number, because 11331131121111 - 2⁶ = 11331131121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331131121911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80268751 + ... + 80409791.

It is an arithmetic number, because the mean of its divisors is an integer number (478625321790).

Almost surely, 2^{11331131121111} is an apocalyptic number.

11331131121111 is a deficient number, since it is larger than the sum of its proper divisors (3984879176169).

11331131121111 is a wasteful number, since it uses less digits than its factorization.

11331131121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142307.

The product of its digits is 54, while the sum is 21.

Adding to 11331131121111 its reverse (11112113113311), we get a palindrome (22443244234422).

The spelling of 11331131121111 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred eleven".