3011147221 has 8 divisors (see below), whose sum is σ = 3021996600. Its totient is φ = 3000311232.

The previous prime is 3011147203. The next prime is 3011147291. The reversal of 3011147221 is 1227411103.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 457360996 + 2553786225 = 21386^2 + 50535^2 .

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 3011147221 - 2²⁹ = 2474276309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3011147192 and 3011147201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011147291) 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, 686391 + ... + 690763.

It is an arithmetic number, because the mean of its divisors is an integer number (377749575).

Almost surely, 2^3011147221 is an apocalyptic number.

It is an amenable number.

3011147221 is a deficient number, since it is larger than the sum of its proper divisors (10849379).

3011147221 is a wasteful number, since it uses less digits than its factorization.

3011147221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 3011147221 is about 54873.9211374584. The cubic root of 3011147221 is about 1444.0337039693.

Adding to 3011147221 its reverse (1227411103), we get a palindrome (4238558324).

The spelling of 3011147221 in words is "three billion, eleven million, one hundred forty-seven thousand, two hundred twenty-one".