121220133742039 has 2 divisors, whose sum is σ = 121220133742040. Its totient is φ = 121220133742038.

The previous prime is 121220133742033. The next prime is 121220133742051. The reversal of 121220133742039 is 930247331022121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220133742039 - 2¹⁵ = 121220133709271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121220133741992 and 121220133742010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220133742033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610066871019 + 60610066871020.

It is an arithmetic number, because the mean of its divisors is an integer number (60610066871020).

Almost surely, 2^{121220133742039} is an apocalyptic number.

121220133742039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220133742039 is an equidigital number, since it uses as much as digits as its factorization.

121220133742039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 121220133742039 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, seven hundred forty-two thousand, thirty-nine".