120122210122021 has 2 divisors, whose sum is σ = 120122210122022. Its totient is φ = 120122210122020.

The previous prime is 120122210122001. The next prime is 120122210122043. The reversal of 120122210122021 is 120221012221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115266291053796 + 4855919068225 = 10736214^2 + 2203615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120122210122021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120122210122021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120122210122001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061105061010 + 60061105061011.

It is an arithmetic number, because the mean of its divisors is an integer number (60061105061011).

Almost surely, 2^{120122210122021} is an apocalyptic number.

It is an amenable number.

120122210122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120122210122021 is an equidigital number, since it uses as much as digits as its factorization.

120122210122021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 120122210122021 its reverse (120221012221021), we get a palindrome (240343222343042).

The spelling of 120122210122021 in words is "one hundred twenty trillion, one hundred twenty-two billion, two hundred ten million, one hundred twenty-two thousand, twenty-one".