123003111220 has 48 divisors (see below), whose sum is σ = 282587393088. Its totient is φ = 44601666560.

The previous prime is 123003111131. The next prime is 123003111229. The reversal of 123003111220 is 22111300321.

It is a junction number, because it is equal to n+sod(n) for n = 123003111194 and 123003111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123003111229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714274 + ... + 869593.

It is an arithmetic number, because the mean of its divisors is an integer number (5887237356).

Almost surely, 2^123003111220 is an apocalyptic number.

123003111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123003111220 is an abundant number, since it is smaller than the sum of its proper divisors (159584281868).

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

123003111220 is a wasteful number, since it uses less digits than its factorization.

123003111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584240 (or 1584238 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123003111220 its reverse (22111300321), we get a palindrome (145114411541).

The spelling of 123003111220 in words is "one hundred twenty-three billion, three million, one hundred eleven thousand, two hundred twenty".