201123202130 has 48 divisors (see below), whose sum is σ = 378585047232. Its totient is φ = 76915836000.

The previous prime is 201123202117. The next prime is 201123202139. The reversal of 201123202130 is 31202321102.

It is a junction number, because it is equal to n+sod(n) for n = 201123202099 and 201123202108.

It is not an unprimeable number, because it can be changed into a prime (201123202139) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 671555 + ... + 923705.

It is an arithmetic number, because the mean of its divisors is an integer number (7887188484).

Almost surely, 2^201123202130 is an apocalyptic number.

201123202130 is a deficient number, since it is larger than the sum of its proper divisors (177461845102).

201123202130 is a wasteful number, since it uses less digits than its factorization.

201123202130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252303 (or 252272 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201123202130 its reverse (31202321102), we get a palindrome (232325523232).

The spelling of 201123202130 in words is "two hundred one billion, one hundred twenty-three million, two hundred two thousand, one hundred thirty".