120122220121 has 2 divisors, whose sum is σ = 120122220122. Its totient is φ = 120122220120.

The previous prime is 120122220107. The next prime is 120122220149. The reversal of 120122220121 is 121022221021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87284793600 + 32837426521 = 295440^2 + 181211^2 .

It is a cyclic number.

It is not a de Polignac number, because 120122220121 - 2²⁵ = 120088665689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120122220095 and 120122220104.

It is not a weakly prime, because it can be changed into another prime (120122220151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061110060 + 60061110061.

It is an arithmetic number, because the mean of its divisors is an integer number (60061110061).

Almost surely, 2^120122220121 is an apocalyptic number.

It is an amenable number.

120122220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120122220121 is an equidigital number, since it uses as much as digits as its factorization.

120122220121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120122220121 its reverse (121022221021), we get a palindrome (241144441142).

The spelling of 120122220121 in words is "one hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".