120122021009 has 2 divisors, whose sum is σ = 120122021010. Its totient is φ = 120122021008.

The previous prime is 120122021003. The next prime is 120122021017. The reversal of 120122021009 is 900120221021.

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., 108679012225 + 11443008784 = 329665^2 + 106972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120122021009 is a prime.

It is not a weakly prime, because it can be changed into another prime (120122021003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061010504 + 60061010505.

It is an arithmetic number, because the mean of its divisors is an integer number (60061010505).

Almost surely, 2^120122021009 is an apocalyptic number.

It is an amenable number.

120122021009 is a deficient number, since it is larger than the sum of its proper divisors (1).

120122021009 is an equidigital number, since it uses as much as digits as its factorization.

120122021009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 120122021009 in words is "one hundred twenty billion, one hundred twenty-two million, twenty-one thousand, nine".