111222121411 has 2 divisors, whose sum is σ = 111222121412. Its totient is φ = 111222121410.

The previous prime is 111222121403. The next prime is 111222121519. The reversal of 111222121411 is 114121222111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111222121411 - 2³ = 111222121403 is a prime.

It is not a weakly prime, because it can be changed into another prime (111222124411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611060705 + 55611060706.

It is an arithmetic number, because the mean of its divisors is an integer number (55611060706).

Almost surely, 2^111222121411 is an apocalyptic number.

111222121411 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222121411 is an equidigital number, since it uses as much as digits as its factorization.

111222121411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 19.

Adding to 111222121411 its reverse (114121222111), we get a palindrome (225343343522).

The spelling of 111222121411 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, four hundred eleven".