201232621 has 8 divisors (see below), whose sum is σ = 213310584. Its totient is φ = 189181440.

The previous prime is 201232613. The next prime is 201232631. The reversal of 201232621 is 126232102.

It can be written as a sum of positive squares in 4 ways, for example, as 103815721 + 97416900 = 10189^2 + 9870^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201232621 - 2³ = 201232613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201232601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9991 + ... + 22411.

It is an arithmetic number, because the mean of its divisors is an integer number (26663823).

Almost surely, 2^201232621 is an apocalyptic number.

It is an amenable number.

201232621 is a deficient number, since it is larger than the sum of its proper divisors (12077963).

201232621 is a wasteful number, since it uses less digits than its factorization.

201232621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391.

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

The square root of 201232621 is about 14185.6484166216. The cubic root of 201232621 is about 586.0024898262.

Adding to 201232621 its reverse (126232102), we get a palindrome (327464723).

The spelling of 201232621 in words is "two hundred one million, two hundred thirty-two thousand, six hundred twenty-one".