3144221221 has 8 divisors (see below), whose sum is σ = 3246399488. Its totient is φ = 3042090000.

The previous prime is 3144221219. The next prime is 3144221231. The reversal of 3144221221 is 1221224413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3144221221 - 2¹ = 3144221219 is a prime.

It is a super-2 number, since 2×3144221221² = 19772254173173461682, 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 = 3144221192 and 3144221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3144221231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167836 + ... + 185626.

It is an arithmetic number, because the mean of its divisors is an integer number (405799936).

Almost surely, 2^3144221221 is an apocalyptic number.

3144221221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3144221221 is a deficient number, since it is larger than the sum of its proper divisors (102178267).

3144221221 is a wasteful number, since it uses less digits than its factorization.

3144221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23523.

The product of its digits is 768, while the sum is 22.

The square root of 3144221221 is about 56073.3557137434. The cubic root of 3144221221 is about 1465.0002478770. Note that the first 3 decimals are identical.

Adding to 3144221221 its reverse (1221224413), we get a palindrome (4365445634).

The spelling of 3144221221 in words is "three billion, one hundred forty-four million, two hundred twenty-one thousand, two hundred twenty-one".