123220122300220 has 96 divisors (see below), whose sum is σ = 288869938156800. Its totient is φ = 43762400693760.

The previous prime is 123220122300113. The next prime is 123220122300221. The reversal of 123220122300220 is 22003221022321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 123220122300191 and 123220122300200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220122300221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145669056 + ... + 146512504.

It is an arithmetic number, because the mean of its divisors is an integer number (3009061855800).

Almost surely, 2^{123220122300220} is an apocalyptic number.

123220122300220 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 123220122300220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144434969078400).

123220122300220 is an abundant number, since it is smaller than the sum of its proper divisors (165649815856580).

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

123220122300220 is a wasteful number, since it uses less digits than its factorization.

123220122300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858955 (or 858953 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 123220122300220 its reverse (22003221022321), we get a palindrome (145223343322541).

The spelling of 123220122300220 in words is "one hundred twenty-three trillion, two hundred twenty billion, one hundred twenty-two million, three hundred thousand, two hundred twenty".