123030022100 has 72 divisors (see below), whose sum is σ = 268337434680. Its totient is φ = 48961566720.

The previous prime is 123030022079. The next prime is 123030022103. The reversal of 123030022100 is 1220030321.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 34276079044 + 88753943056 = 185138^2 + 297916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030022103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16233512 + ... + 16241088.

It is an arithmetic number, because the mean of its divisors is an integer number (3726908815).

Almost surely, 2^123030022100 is an apocalyptic number.

123030022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030022100 is an abundant number, since it is smaller than the sum of its proper divisors (145307412580).

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

123030022100 is a wasteful number, since it uses less digits than its factorization.

123030022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8397 (or 8390 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 123030022100 its reverse (1220030321), we get a palindrome (124250052421).

The spelling of 123030022100 in words is "one hundred twenty-three billion, thirty million, twenty-two thousand, one hundred".