201021123232 has 24 divisors (see below), whose sum is σ = 397810920276. Its totient is φ = 99989778432.

The previous prime is 201021123217. The next prime is 201021123239. The reversal of 201021123232 is 232321120102.

It can be written as a sum of positive squares in 2 ways, for example, as 153096908176 + 47924215056 = 391276^2 + 218916^2 .

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16268203 + ... + 16280554.

Almost surely, 2^201021123232 is an apocalyptic number.

It is an amenable number.

201021123232 is a deficient number, since it is larger than the sum of its proper divisors (196789797044).

201021123232 is a wasteful number, since it uses less digits than its factorization.

201021123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32548960 (or 32548952 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201021123232 its reverse (232321120102), we get a palindrome (433342243334).

The spelling of 201021123232 in words is "two hundred one billion, twenty-one million, one hundred twenty-three thousand, two hundred thirty-two".