130123212 has 24 divisors (see below), whose sum is σ = 304809456. Its totient is φ = 43204608.

The previous prime is 130123211. The next prime is 130123241. The reversal of 130123212 is 212321031.

It is a junction number, because it is equal to n+sod(n) for n = 130123191 and 130123200.

It is not an unprimeable number, because it can be changed into a prime (130123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18013 + ... + 24180.

It is an arithmetic number, because the mean of its divisors is an integer number (12700394).

Almost surely, 2^130123212 is an apocalyptic number.

130123212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130123212 is an abundant number, since it is smaller than the sum of its proper divisors (174686244).

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

130123212 is a wasteful number, since it uses less digits than its factorization.

130123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42457 (or 42455 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 130123212 is about 11407.1561749632. The cubic root of 130123212 is about 506.7396941906.

Adding to 130123212 its reverse (212321031), we get a palindrome (342444243).

The spelling of 130123212 in words is "one hundred thirty million, one hundred twenty-three thousand, two hundred twelve".