111212110121143 has 2 divisors, whose sum is σ = 111212110121144. Its totient is φ = 111212110121142.

The previous prime is 111212110121113. The next prime is 111212110121171. The reversal of 111212110121143 is 341121011212111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111212110121143 - 2¹³ = 111212110112951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212110121113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606055060571 + 55606055060572.

It is an arithmetic number, because the mean of its divisors is an integer number (55606055060572).

Almost surely, 2^{111212110121143} is an apocalyptic number.

111212110121143 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212110121143 is an equidigital number, since it uses as much as digits as its factorization.

111212110121143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 111212110121143 its reverse (341121011212111), we get a palindrome (452333121333254).

The spelling of 111212110121143 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, one hundred forty-three".