2201021231 has 4 divisors (see below), whose sum is σ = 2206510464. Its totient is φ = 2195532000.

The previous prime is 2201021227. The next prime is 2201021243. The reversal of 2201021231 is 1321201022.

It is a happy number.

2201021231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321201022 = 2 ⋅660600511.

It is a cyclic number.

It is not a de Polignac number, because 2201021231 - 2² = 2201021227 is a prime.

It is a super-2 number, since 2×2201021231² = 9688988918625510722, 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 (2201021201) 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, 2744015 + ... + 2744816.

It is an arithmetic number, because the mean of its divisors is an integer number (551627616).

Almost surely, 2^2201021231 is an apocalyptic number.

2201021231 is a deficient number, since it is larger than the sum of its proper divisors (5489233).

2201021231 is an equidigital number, since it uses as much as digits as its factorization.

2201021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489232.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2201021231 is about 46915.0426942148. The cubic root of 2201021231 is about 1300.7926587970.

Adding to 2201021231 its reverse (1321201022), we get a palindrome (3522222253).

The spelling of 2201021231 in words is "two billion, two hundred one million, twenty-one thousand, two hundred thirty-one".