120122001 has 16 divisors (see below), whose sum is σ = 178897920. Its totient is φ = 79658640.

The previous prime is 120121997. The next prime is 120122003. The reversal of 120122001 is 100221021.

It is not a de Polignac number, because 120122001 - 2² = 120121997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120122003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6490 + ... + 16803.

It is an arithmetic number, because the mean of its divisors is an integer number (11181120).

Almost surely, 2^120122001 is an apocalyptic number.

It is an amenable number.

120122001 is a deficient number, since it is larger than the sum of its proper divisors (58775919).

120122001 is a wasteful number, since it uses less digits than its factorization.

120122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23493 (or 23487 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 120122001 is about 10960.0182937804. The cubic root of 120122001 is about 493.4095139944.

Adding to 120122001 its reverse (100221021), we get a palindrome (220343022).

The spelling of 120122001 in words is "one hundred twenty million, one hundred twenty-two thousand, one".