3124011221 has 8 divisors (see below), whose sum is σ = 3155220864. Its totient is φ = 3092864320.

The previous prime is 3124011169. The next prime is 3124011223. The reversal of 3124011221 is 1221104213.

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 3124011221 - 2⁶ = 3124011157 is a prime.

It is a super-2 number, since 2×3124011221² = 19518892217867821682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3124011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124011223) 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, 87770 + ... + 118116.

It is an arithmetic number, because the mean of its divisors is an integer number (394402608).

Almost surely, 2^3124011221 is an apocalyptic number.

It is an amenable number.

3124011221 is a deficient number, since it is larger than the sum of its proper divisors (31209643).

3124011221 is a wasteful number, since it uses less digits than its factorization.

3124011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31371.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 3124011221 is about 55892.8548295755. The cubic root of 3124011221 is about 1461.8546551158.

Adding to 3124011221 its reverse (1221104213), we get a palindrome (4345115434).

The spelling of 3124011221 in words is "three billion, one hundred twenty-four million, eleven thousand, two hundred twenty-one".