212031123130 has 16 divisors (see below), whose sum is σ = 385944293160. Its totient is φ = 83859500032.

The previous prime is 212031123127. The next prime is 212031123133. The reversal of 212031123130 is 31321130212.

212031123130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212031123127) and next prime (212031123133).

It can be written as a sum of positive squares in 4 ways, for example, as 188712916921 + 23318206209 = 434411^2 + 152703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212031123098 and 212031123107.

It is not an unprimeable number, because it can be changed into a prime (212031123133) 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 7 ways as a sum of consecutive naturals, for example, 119117719 + ... + 119119498.

Almost surely, 2^212031123130 is an apocalyptic number.

212031123130 is a deficient number, since it is larger than the sum of its proper divisors (173913170030).

212031123130 is a wasteful number, since it uses less digits than its factorization.

212031123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238237313.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212031123130 its reverse (31321130212), we get a palindrome (243352253342).

The spelling of 212031123130 in words is "two hundred twelve billion, thirty-one million, one hundred twenty-three thousand, one hundred thirty".