20200120122 has 96 divisors (see below), whose sum is σ = 50077232640. Its totient is φ = 5318913600.

The previous prime is 20200120121. The next prime is 20200120133. The reversal of 20200120122 is 22102100202.

It is a junction number, because it is equal to n+sod(n) for n = 20200120098 and 20200120107.

It is not an unprimeable number, because it can be changed into a prime (20200120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5243497 + ... + 5247347.

It is an arithmetic number, because the mean of its divisors is an integer number (521637840).

Almost surely, 2^20200120122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200120122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25038616320).

20200120122 is an abundant number, since it is smaller than the sum of its proper divisors (29877112518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20200120122 is a wasteful number, since it uses less digits than its factorization.

20200120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628 (or 4615 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20200120122 its reverse (22102100202), we get a palindrome (42302220324).

The spelling of 20200120122 in words is "twenty billion, two hundred million, one hundred twenty thousand, one hundred twenty-two".