123101100220 has 48 divisors (see below), whose sum is σ = 295466189760. Its totient is φ = 42202727424.

The previous prime is 123101100217. The next prime is 123101100253. The reversal of 123101100220 is 22001101321.

123101100220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 123101100220.

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, 2264802 + ... + 2318518.

It is an arithmetic number, because the mean of its divisors is an integer number (6155545620).

Almost surely, 2^123101100220 is an apocalyptic number.

123101100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123101100220 is an abundant number, since it is smaller than the sum of its proper divisors (172365089540).

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

123101100220 is a wasteful number, since it uses less digits than its factorization.

123101100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70102 (or 70100 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 123101100220 its reverse (22001101321), we get a palindrome (145102201541).

The spelling of 123101100220 in words is "one hundred twenty-three billion, one hundred one million, one hundred thousand, two hundred twenty".