120221203121 has 2 divisors, whose sum is σ = 120221203122. Its totient is φ = 120221203120.

The previous prime is 120221203093. The next prime is 120221203127. The reversal of 120221203121 is 121302122021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120106606096 + 114597025 = 346564^2 + 10705^2 .

It is a cyclic number.

It is not a de Polignac number, because 120221203121 - 2³⁰ = 119147461297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120221203121.

It is not a weakly prime, because it can be changed into another prime (120221203127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110601560 + 60110601561.

It is an arithmetic number, because the mean of its divisors is an integer number (60110601561).

Almost surely, 2^120221203121 is an apocalyptic number.

It is an amenable number.

120221203121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221203121 is an equidigital number, since it uses as much as digits as its factorization.

120221203121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 120221203121 its reverse (121302122021), we get a palindrome (241523325142).

The spelling of 120221203121 in words is "one hundred twenty billion, two hundred twenty-one million, two hundred three thousand, one hundred twenty-one".