3230111221 has 4 divisors (see below), whose sum is σ = 3233191500. Its totient is φ = 3227030944.

The previous prime is 3230111177. The next prime is 3230111233. The reversal of 3230111221 is 1221110323.

3230111221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2257295121 + 972816100 = 47511^2 + 31190^2 .

It is a cyclic number.

It is not a de Polignac number, because 3230111221 - 2²³ = 3221722613 is a prime.

It is a super-2 number, since 2×3230111221² = 20867237000060221682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3230111195 and 3230111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3230111821) 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, 1538566 + ... + 1540663.

It is an arithmetic number, because the mean of its divisors is an integer number (808297875).

Almost surely, 2^3230111221 is an apocalyptic number.

It is an amenable number.

3230111221 is a deficient number, since it is larger than the sum of its proper divisors (3080279).

3230111221 is a wasteful number, since it uses less digits than its factorization.

3230111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080278.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3230111221 is about 56834.0674331866. The cubic root of 3230111221 is about 1478.2202890659.

Adding to 3230111221 its reverse (1221110323), we get a palindrome (4451221544).

The spelling of 3230111221 in words is "three billion, two hundred thirty million, one hundred eleven thousand, two hundred twenty-one".