123012102220 has 96 divisors (see below), whose sum is σ = 300959318016. Its totient is φ = 41363212800.

The previous prime is 123012102197. The next prime is 123012102223. The reversal of 123012102220 is 22201210321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123012102194 and 123012102203.

It is not an unprimeable number, because it can be changed into a prime (123012102223) 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, 1866144 + ... + 1930936.

It is an arithmetic number, because the mean of its divisors is an integer number (3134992896).

Almost surely, 2^123012102220 is an apocalyptic number.

123012102220 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 123012102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150479659008).

123012102220 is an abundant number, since it is smaller than the sum of its proper divisors (177947215796).

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

123012102220 is a wasteful number, since it uses less digits than its factorization.

123012102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65071 (or 65069 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 123012102220 its reverse (22201210321), we get a palindrome (145213312541).

The spelling of 123012102220 in words is "one hundred twenty-three billion, twelve million, one hundred two thousand, two hundred twenty".