123312333210220 has 288 divisors, whose sum is σ = 333328149504000. Its totient is φ = 38274135419520.

The previous prime is 123312333210149. The next prime is 123312333210223. The reversal of 123312333210220 is 22012333213321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (123312333210223) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 198073549 + ... + 198695131.

It is an arithmetic number, because the mean of its divisors is an integer number (1157389408000).

Almost surely, 2^{123312333210220} is an apocalyptic number.

123312333210220 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 123312333210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166664074752000).

123312333210220 is an abundant number, since it is smaller than the sum of its proper divisors (210015816293780).

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

123312333210220 is a wasteful number, since it uses less digits than its factorization.

123312333210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621874 (or 621847 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 123312333210220 its reverse (22012333213321), we get a palindrome (145324666423541).

The spelling of 123312333210220 in words is "one hundred twenty-three trillion, three hundred twelve billion, three hundred thirty-three million, two hundred ten thousand, two hundred twenty".