2232321221 has 16 divisors (see below), whose sum is σ = 2604659904. Its totient is φ = 1894281984.

The previous prime is 2232321211. The next prime is 2232321233. The reversal of 2232321221 is 1221232322.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2232321221 is a prime.

It is a super-3 number, since 3×2232321221³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2232321193 and 2232321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2232321211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107951 + ... + 126956.

It is an arithmetic number, because the mean of its divisors is an integer number (162791244).

Almost surely, 2^2232321221 is an apocalyptic number.

It is an amenable number.

2232321221 is a deficient number, since it is larger than the sum of its proper divisors (372338683).

2232321221 is a wasteful number, since it uses less digits than its factorization.

2232321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234980.

The product of its digits is 576, while the sum is 20.

The square root of 2232321221 is about 47247.4467140818. The cubic root of 2232321221 is about 1306.9297055299.

Adding to 2232321221 its reverse (1221232322), we get a palindrome (3453553543).

The spelling of 2232321221 in words is "two billion, two hundred thirty-two million, three hundred twenty-one thousand, two hundred twenty-one".