120221075761 has 2 divisors, whose sum is σ = 120221075762. Its totient is φ = 120221075760.

The previous prime is 120221075743. The next prime is 120221075783. The reversal of 120221075761 is 167570122021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119798362161 + 422713600 = 346119^2 + 20560^2 .

It is a cyclic number.

It is not a de Polignac number, because 120221075761 - 2⁵ = 120221075729 is a prime.

It is not a weakly prime, because it can be changed into another prime (120221075461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110537880 + 60110537881.

It is an arithmetic number, because the mean of its divisors is an integer number (60110537881).

Almost surely, 2^120221075761 is an apocalyptic number.

It is an amenable number.

120221075761 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221075761 is an equidigital number, since it uses as much as digits as its factorization.

120221075761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 34.

Adding to 120221075761 its reverse (167570122021), we get a palindrome (287791197782).

The spelling of 120221075761 in words is "one hundred twenty billion, two hundred twenty-one million, seventy-five thousand, seven hundred sixty-one".