120221075729 has 2 divisors, whose sum is σ = 120221075730. Its totient is φ = 120221075728.

The previous prime is 120221075617. The next prime is 120221075743. The reversal of 120221075729 is 927570122021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70702810000 + 49518265729 = 265900^2 + 222527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120221075729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120221075692 and 120221075701.

It is not a weakly prime, because it can be changed into another prime (120221035729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110537864 + 60110537865.

It is an arithmetic number, because the mean of its divisors is an integer number (60110537865).

Almost surely, 2^120221075729 is an apocalyptic number.

It is an amenable number.

120221075729 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221075729 is an equidigital number, since it uses as much as digits as its factorization.

120221075729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 120221075729 in words is "one hundred twenty billion, two hundred twenty-one million, seventy-five thousand, seven hundred twenty-nine".