123112202130 has 80 divisors (see below), whose sum is σ = 334754723160. Its totient is φ = 32461026048.

The previous prime is 123112202093. The next prime is 123112202137. The reversal of 123112202130 is 31202211321.

123112202130 is a `hidden beast` number, since 1 + 2 + 311 + 220 + 2 + 130 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 98709700761 + 24402501369 = 314181^2 + 156213^2 .

It is a super-2 number, since 2×123112202130² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (123112202137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 781789 + ... + 925968.

Almost surely, 2^123112202130 is an apocalyptic number.

123112202130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123112202130 is an abundant number, since it is smaller than the sum of its proper divisors (211642521030).

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

123112202130 is a wasteful number, since it uses less digits than its factorization.

123112202130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707865 (or 1707856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123112202130 its reverse (31202211321), we get a palindrome (154314413451).

The spelling of 123112202130 in words is "one hundred twenty-three billion, one hundred twelve million, two hundred two thousand, one hundred thirty".