123130011031220 has 48 divisors (see below), whose sum is σ = 272184859880640. Its totient is φ = 46659325614336.

The previous prime is 123130011031217. The next prime is 123130011031301. The reversal of 123130011031220 is 22130110031321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123130011031192 and 123130011031201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37548479 + ... + 40695801.

It is an arithmetic number, because the mean of its divisors is an integer number (5670517914180).

Almost surely, 2^{123130011031220} is an apocalyptic number.

123130011031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123130011031220 is an abundant number, since it is smaller than the sum of its proper divisors (149054848849420).

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

123130011031220 is a wasteful number, since it uses less digits than its factorization.

123130011031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250304 (or 3250302 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123130011031220 its reverse (22130110031321), we get a palindrome (145260121062541).

The spelling of 123130011031220 in words is "one hundred twenty-three trillion, one hundred thirty billion, eleven million, thirty-one thousand, two hundred twenty".