123044220204420 has 192 divisors, whose sum is σ = 372116075466240. Its totient is φ = 30285319680000.

The previous prime is 123044220204419. The next prime is 123044220204463. The reversal of 123044220204420 is 24402022440321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67981170 + ... + 69767670.

It is an arithmetic number, because the mean of its divisors is an integer number (1938104559720).

Almost surely, 2^{123044220204420} is an apocalyptic number.

123044220204420 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 123044220204420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186058037733120).

123044220204420 is an abundant number, since it is smaller than the sum of its proper divisors (249071855261820).

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

123044220204420 is a wasteful number, since it uses less digits than its factorization.

123044220204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788286 (or 1788284 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 123044220204420 its reverse (24402022440321), we get a palindrome (147446242644741).

The spelling of 123044220204420 in words is "one hundred twenty-three trillion, forty-four billion, two hundred twenty million, two hundred four thousand, four hundred twenty".