120122021689 has 2 divisors, whose sum is σ = 120122021690. Its totient is φ = 120122021688.

The previous prime is 120122021683. The next prime is 120122021717. The reversal of 120122021689 is 986120221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66884304400 + 53237717289 = 258620^2 + 230733^2 .

It is a cyclic number.

It is not a de Polignac number, because 120122021689 - 2¹⁷ = 120121890617 is a prime.

It is not a weakly prime, because it can be changed into another prime (120122021683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061010844 + 60061010845.

It is an arithmetic number, because the mean of its divisors is an integer number (60061010845).

Almost surely, 2^120122021689 is an apocalyptic number.

It is an amenable number.

120122021689 is a deficient number, since it is larger than the sum of its proper divisors (1).

120122021689 is an equidigital number, since it uses as much as digits as its factorization.

120122021689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 120122021689 in words is "one hundred twenty billion, one hundred twenty-two million, twenty-one thousand, six hundred eighty-nine".