201232122331 has 4 divisors (see below), whose sum is σ = 201543146352. Its totient is φ = 200921098312.

The previous prime is 201232122323. The next prime is 201232122337. The reversal of 201232122331 is 133221232102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201232122331 - 2³ = 201232122323 is a prime.

It is a super-2 number, since 2×201232122331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201232122337) 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, 155511040 + ... + 155512333.

It is an arithmetic number, because the mean of its divisors is an integer number (50385786588).

Almost surely, 2^201232122331 is an apocalyptic number.

201232122331 is a deficient number, since it is larger than the sum of its proper divisors (311024021).

201232122331 is an equidigital number, since it uses as much as digits as its factorization.

201232122331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311024020.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 201232122331 its reverse (133221232102), we get a palindrome (334453354433).

The spelling of 201232122331 in words is "two hundred one billion, two hundred thirty-two million, one hundred twenty-two thousand, three hundred thirty-one".