123101130312220 has 96 divisors (see below), whose sum is σ = 270102731673600. Its totient is φ = 47071624058880.

The previous prime is 123101130312169. The next prime is 123101130312253. The reversal of 123101130312220 is 22213031101321.

It is a junction number, because it is equal to n+sod(n) for n = 123101130312191 and 123101130312200.

It is a congruent number.

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, 393461169 + ... + 393773911.

It is an arithmetic number, because the mean of its divisors is an integer number (2813570121600).

Almost surely, 2^{123101130312220} is an apocalyptic number.

123101130312220 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 123101130312220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135051365836800).

123101130312220 is an abundant number, since it is smaller than the sum of its proper divisors (147001601361380).

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

123101130312220 is a wasteful number, since it uses less digits than its factorization.

123101130312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320515 (or 320513 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 123101130312220 its reverse (22213031101321), we get a palindrome (145314161413541).

The spelling of 123101130312220 in words is "one hundred twenty-three trillion, one hundred one billion, one hundred thirty million, three hundred twelve thousand, two hundred twenty".