3122124221 has 4 divisors (see below), whose sum is σ = 3153036444. Its totient is φ = 3091212000.

The previous prime is 3122124209. The next prime is 3122124233. The reversal of 3122124221 is 1224212213.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3122124209) and next prime (3122124233).

It can be written as a sum of positive squares in 2 ways, for example, as 2901007321 + 221116900 = 53861^2 + 14870^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122124221 - 2¹⁰ = 3122123197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3122124193 and 3122124202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122124721) 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, 15455960 + ... + 15456161.

It is an arithmetic number, because the mean of its divisors is an integer number (788259111).

Almost surely, 2^3122124221 is an apocalyptic number.

It is an amenable number.

3122124221 is a deficient number, since it is larger than the sum of its proper divisors (30912223).

3122124221 is a wasteful number, since it uses less digits than its factorization.

3122124221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30912222.

The product of its digits is 384, while the sum is 20.

The square root of 3122124221 is about 55875.9717678359. The cubic root of 3122124221 is about 1461.5602605980.

Adding to 3122124221 its reverse (1224212213), we get a palindrome (4346336434).

The spelling of 3122124221 in words is "three billion, one hundred twenty-two million, one hundred twenty-four thousand, two hundred twenty-one".