120222220021 has 2 divisors, whose sum is σ = 120222220022. Its totient is φ = 120222220020.

The previous prime is 120222220007. The next prime is 120222220033. The reversal of 120222220021 is 120022222021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71938749796 + 48283470225 = 268214^2 + 219735^2 .

It is a cyclic number.

It is not a de Polignac number, because 120222220021 - 2⁷ = 120222219893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120222219977 and 120222220004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120222220051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60111110010 + 60111110011.

It is an arithmetic number, because the mean of its divisors is an integer number (60111110011).

Almost surely, 2^120222220021 is an apocalyptic number.

It is an amenable number.

120222220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120222220021 is an equidigital number, since it uses as much as digits as its factorization.

120222220021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 120222220021 its reverse (120022222021), we get a palindrome (240244442042).

The spelling of 120222220021 in words is "one hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, twenty-one".