120120122121 has 16 divisors (see below), whose sum is σ = 163576902720. Its totient is φ = 78389415360.

The previous prime is 120120122117. The next prime is 120120122123. The reversal of 120120122121 is 121221021021.

It is not a de Polignac number, because 120120122121 - 2² = 120120122117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120120122121.

It is not an unprimeable number, because it can be changed into a prime (120120122123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2185750 + ... + 2240031.

It is an arithmetic number, because the mean of its divisors is an integer number (10223556420).

Almost surely, 2^120120122121 is an apocalyptic number.

It is an amenable number.

120120122121 is a deficient number, since it is larger than the sum of its proper divisors (43456780599).

120120122121 is a wasteful number, since it uses less digits than its factorization.

120120122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425976.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120120122121 its reverse (121221021021), we get a palindrome (241341143142).

It can be divided in two parts, 12012012 and 2121, that multiplied together give a palindrome (25477477452).

The spelling of 120120122121 in words is "one hundred twenty billion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".