111120211331 has 2 divisors, whose sum is σ = 111120211332. Its totient is φ = 111120211330.

The previous prime is 111120211327. The next prime is 111120211361. The reversal of 111120211331 is 133112021111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111120211331 - 2² = 111120211327 is a prime.

It is a super-2 number, since 2×111120211331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111120211361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560105665 + 55560105666.

It is an arithmetic number, because the mean of its divisors is an integer number (55560105666).

Almost surely, 2^111120211331 is an apocalyptic number.

111120211331 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120211331 is an equidigital number, since it uses as much as digits as its factorization.

111120211331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111120211331 its reverse (133112021111), we get a palindrome (244232232442).

The spelling of 111120211331 in words is "one hundred eleven billion, one hundred twenty million, two hundred eleven thousand, three hundred thirty-one".