201022231 has 4 divisors (see below), whose sum is σ = 209762352. Its totient is φ = 192282112.

The previous prime is 201022207. The next prime is 201022271. The reversal of 201022231 is 132220102.

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 201022231 - 2⁷ = 201022103 is a prime.

It is a super-2 number, since 2×201022231² = 80819874712434722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4370026 + ... + 4370071.

It is an arithmetic number, because the mean of its divisors is an integer number (52440588).

Almost surely, 2^201022231 is an apocalyptic number.

201022231 is a deficient number, since it is larger than the sum of its proper divisors (8740121).

201022231 is an equidigital number, since it uses as much as digits as its factorization.

201022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740120.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 201022231 is about 14178.2308839996. The cubic root of 201022231 is about 585.7981954882.

Adding to 201022231 its reverse (132220102), we get a palindrome (333242333).

The spelling of 201022231 in words is "two hundred one million, twenty-two thousand, two hundred thirty-one".