120220021321 has 2 divisors, whose sum is σ = 120220021322. Its totient is φ = 120220021320.

The previous prime is 120220021297. The next prime is 120220021343. The reversal of 120220021321 is 123120022021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101467731600 + 18752289721 = 318540^2 + 136939^2 .

It is a cyclic number.

It is not a de Polignac number, because 120220021321 - 2¹¹ = 120220019273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120220021295 and 120220021304.

It is not a weakly prime, because it can be changed into another prime (120220021351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110010660 + 60110010661.

It is an arithmetic number, because the mean of its divisors is an integer number (60110010661).

Almost surely, 2^120220021321 is an apocalyptic number.

It is an amenable number.

120220021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220021321 is an equidigital number, since it uses as much as digits as its factorization.

120220021321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 120220021321 its reverse (123120022021), we get a palindrome (243340043342).

The spelling of 120220021321 in words is "one hundred twenty billion, two hundred twenty million, twenty-one thousand, three hundred twenty-one".