3124045130221 has 2 divisors, whose sum is σ = 3124045130222. Its totient is φ = 3124045130220.

The previous prime is 3124045130209. The next prime is 3124045130237. The reversal of 3124045130221 is 1220315404213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2804804310025 + 319240820196 = 1674755^2 + 565014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3124045130221 - 2¹⁷ = 3124044999149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3124045130221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3124045130291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562022565110 + 1562022565111.

It is an arithmetic number, because the mean of its divisors is an integer number (1562022565111).

Almost surely, 2^{3124045130221} is an apocalyptic number.

It is an amenable number.

3124045130221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3124045130221 is an equidigital number, since it uses as much as digits as its factorization.

3124045130221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 3124045130221 in words is "three trillion, one hundred twenty-four billion, forty-five million, one hundred thirty thousand, two hundred twenty-one".