123122230220 has 96 divisors (see below), whose sum is σ = 297017038080. Its totient is φ = 42399624960.

The previous prime is 123122230219. The next prime is 123122230229. The reversal of 123122230220 is 22032221321.

It is a happy number.

123122230220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123122230192 and 123122230201.

It is not an unprimeable number, because it can be changed into a prime (123122230229) 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 31 ways as a sum of consecutive naturals, for example, 20784179 + ... + 20790101.

It is an arithmetic number, because the mean of its divisors is an integer number (3093927480).

Almost surely, 2^123122230220 is an apocalyptic number.

123122230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123122230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148508519040).

123122230220 is an abundant number, since it is smaller than the sum of its proper divisors (173894807860).

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

123122230220 is a wasteful number, since it uses less digits than its factorization.

123122230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10935 (or 10933 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 123122230220 its reverse (22032221321), we get a palindrome (145154451541).

The spelling of 123122230220 in words is "one hundred twenty-three billion, one hundred twenty-two million, two hundred thirty thousand, two hundred twenty".