121102042340143 has 2 divisors, whose sum is σ = 121102042340144. Its totient is φ = 121102042340142.

The previous prime is 121102042340099. The next prime is 121102042340159. The reversal of 121102042340143 is 341043240201121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121102042340143 - 2²¹ = 121102040242991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121102042340183) 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, 60551021170071 + 60551021170072.

It is an arithmetic number, because the mean of its divisors is an integer number (60551021170072).

Almost surely, 2^{121102042340143} is an apocalyptic number.

121102042340143 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102042340143 is an equidigital number, since it uses as much as digits as its factorization.

121102042340143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 121102042340143 its reverse (341043240201121), we get a palindrome (462145282541264).

The spelling of 121102042340143 in words is "one hundred twenty-one trillion, one hundred two billion, forty-two million, three hundred forty thousand, one hundred forty-three".