111221222122141 has 2 divisors, whose sum is σ = 111221222122142. Its totient is φ = 111221222122140.

The previous prime is 111221222121991. The next prime is 111221222122151. The reversal of 111221222122141 is 141221222122111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78885838332900 + 32335383789241 = 8881770^2 + 5686421^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221222122141 - 2⁹ = 111221222121629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221222122151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610611061070 + 55610611061071.

It is an arithmetic number, because the mean of its divisors is an integer number (55610611061071).

Almost surely, 2^{111221222122141} is an apocalyptic number.

It is an amenable number.

111221222122141 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221222122141 is an equidigital number, since it uses as much as digits as its factorization.

111221222122141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 25.

Adding to 111221222122141 its reverse (141221222122111), we get a palindrome (252442444244252).

The spelling of 111221222122141 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred forty-one".