2232031221 has 40 divisors (see below), whose sum is σ = 3814624704. Its totient is φ = 1274097600.

The previous prime is 2232031211. The next prime is 2232031247. The reversal of 2232031221 is 1221302322.

It is not a de Polignac number, because 2232031221 - 2¹⁹ = 2231506933 is a prime.

It is a super-3 number, since 3×2232031221³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2232031194 and 2232031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2232031211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 821361 + ... + 824073.

Almost surely, 2^2232031221 is an apocalyptic number.

2232031221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2232031221 is a deficient number, since it is larger than the sum of its proper divisors (1582593483).

2232031221 is a wasteful number, since it uses less digits than its factorization.

2232031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183 (or 4174 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2232031221 is about 47244.3776654958. The cubic root of 2232031221 is about 1306.8731088322.

Adding to 2232031221 its reverse (1221302322), we get a palindrome (3453333543).

The spelling of 2232031221 in words is "two billion, two hundred thirty-two million, thirty-one thousand, two hundred twenty-one".