2231446221 has 12 divisors (see below), whose sum is σ = 3224894400. Its totient is φ = 1486848840.

The previous prime is 2231446211. The next prime is 2231446229. The reversal of 2231446221 is 1226441322.

2231446221 is a `hidden beast` number, since 2 + 2 + 31 + 4 + 4 + 622 + 1 = 666.

It is not a de Polignac number, because 2231446221 - 2¹⁰ = 2231445197 is a prime.

It is a super-3 number, since 3×2231446221³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231446229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46821 + ... + 81578.

It is an arithmetic number, because the mean of its divisors is an integer number (268741200).

Almost surely, 2^2231446221 is an apocalyptic number.

It is an amenable number.

2231446221 is a deficient number, since it is larger than the sum of its proper divisors (993448179).

2231446221 is a wasteful number, since it uses less digits than its factorization.

2231446221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130336 (or 130333 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2231446221 is about 47238.1860468837. The cubic root of 2231446221 is about 1306.7589247110.

Adding to 2231446221 its reverse (1226441322), we get a palindrome (3457887543).

The spelling of 2231446221 in words is "two billion, two hundred thirty-one million, four hundred forty-six thousand, two hundred twenty-one".