123021320130 has 80 divisors (see below), whose sum is σ = 330850396800. Its totient is φ = 32799761568.

The previous prime is 123021320113. The next prime is 123021320143. The reversal of 123021320130 is 31023120321.

123021320130 is a `hidden beast` number, since 12 + 302 + 1 + 320 + 1 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6226327 + ... + 6246053.

It is an arithmetic number, because the mean of its divisors is an integer number (4135629960).

Almost surely, 2^123021320130 is an apocalyptic number.

123021320130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123021320130 is an abundant number, since it is smaller than the sum of its proper divisors (207829076670).

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

123021320130 is a wasteful number, since it uses less digits than its factorization.

123021320130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27445 (or 27436 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123021320130 its reverse (31023120321), we get a palindrome (154044440451).

The spelling of 123021320130 in words is "one hundred twenty-three billion, twenty-one million, three hundred twenty thousand, one hundred thirty".