120122420989 has 2 divisors, whose sum is σ = 120122420990. Its totient is φ = 120122420988.

The previous prime is 120122420987. The next prime is 120122421113. The reversal of 120122420989 is 989024221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118002555225 + 2119865764 = 343515^2 + 46042^2 .

It is a cyclic number.

It is not a de Polignac number, because 120122420989 - 2¹ = 120122420987 is a prime.

Together with 120122420987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120122420987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061210494 + 60061210495.

It is an arithmetic number, because the mean of its divisors is an integer number (60061210495).

Almost surely, 2^120122420989 is an apocalyptic number.

It is an amenable number.

120122420989 is a deficient number, since it is larger than the sum of its proper divisors (1).

120122420989 is an equidigital number, since it uses as much as digits as its factorization.

120122420989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 120122420989 in words is "one hundred twenty billion, one hundred twenty-two million, four hundred twenty thousand, nine hundred eighty-nine".