123112101320 has 64 divisors (see below), whose sum is σ = 314010648000. Its totient is φ = 43064310528.

The previous prime is 123112101313. The next prime is 123112101331. The reversal of 123112101320 is 23101211321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6220490 + ... + 6240249.

It is an arithmetic number, because the mean of its divisors is an integer number (4906416375).

Almost surely, 2^123112101320 is an apocalyptic number.

123112101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123112101320 is an abundant number, since it is smaller than the sum of its proper divisors (190898546680).

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

123112101320 is a wasteful number, since it uses less digits than its factorization.

123112101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12460782 (or 12460778 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123112101320 its reverse (23101211321), we get a palindrome (146213312641).

The spelling of 123112101320 in words is "one hundred twenty-three billion, one hundred twelve million, one hundred one thousand, three hundred twenty".