123201211223020 has 96 divisors (see below), whose sum is σ = 305960977889280. Its totient is φ = 40772901415680.

The previous prime is 123201211222981. The next prime is 123201211223063. The reversal of 123201211223020 is 20322112102321.

It is a junction number, because it is equal to n+sod(n) for n = 123201211222982 and 123201211223000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11060635 + ... + 19202605.

It is an arithmetic number, because the mean of its divisors is an integer number (3187093519680).

Almost surely, 2^{123201211223020} is an apocalyptic number.

123201211223020 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 123201211223020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152980488944640).

123201211223020 is an abundant number, since it is smaller than the sum of its proper divisors (182759766666260).

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

123201211223020 is a wasteful number, since it uses less digits than its factorization.

123201211223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145743 (or 8145741 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 123201211223020 its reverse (20322112102321), we get a palindrome (143523323325341).

The spelling of 123201211223020 in words is "one hundred twenty-three trillion, two hundred one billion, two hundred eleven million, two hundred twenty-three thousand, twenty".