201232132221 has 4 divisors (see below), whose sum is σ = 268309509632. Its totient is φ = 134154754812.

The previous prime is 201232132183. The next prime is 201232132237. The reversal of 201232132221 is 122231232102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201232132221 - 2¹⁰ = 201232131197 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 (201232132121) 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 3 ways as a sum of consecutive naturals, for example, 33538688701 + ... + 33538688706.

It is an arithmetic number, because the mean of its divisors is an integer number (67077377408).

Almost surely, 2^201232132221 is an apocalyptic number.

It is an amenable number.

201232132221 is a deficient number, since it is larger than the sum of its proper divisors (67077377411).

201232132221 is an equidigital number, since it uses as much as digits as its factorization.

201232132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67077377410.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201232132221 its reverse (122231232102), we get a palindrome (323463364323).

The spelling of 201232132221 in words is "two hundred one billion, two hundred thirty-two million, one hundred thirty-two thousand, two hundred twenty-one".