201021123230 has 32 divisors (see below), whose sum is σ = 377262627840. Its totient is φ = 77024424960.

The previous prime is 201021123217. The next prime is 201021123239. The reversal of 201021123230 is 32321120102.

201021123230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201021123199 and 201021123208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021123239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2692211 + ... + 2765870.

It is an arithmetic number, because the mean of its divisors is an integer number (11789457120).

Almost surely, 2^201021123230 is an apocalyptic number.

201021123230 is a deficient number, since it is larger than the sum of its proper divisors (176241504610).

201021123230 is a wasteful number, since it uses less digits than its factorization.

201021123230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458244.

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

Adding to 201021123230 its reverse (32321120102), we get a palindrome (233342243332).

The spelling of 201021123230 in words is "two hundred one billion, twenty-one million, one hundred twenty-three thousand, two hundred thirty".