3124212021 has 72 divisors (see below), whose sum is σ = 5463244800. Its totient is φ = 1713337920.

The previous prime is 3124211977. The next prime is 3124212037. The reversal of 3124212021 is 1202124213.

It is a happy number.

It is not a de Polignac number, because 3124212021 - 2²⁵ = 3090657589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3124211985 and 3124212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124202021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2442060 + ... + 2443338.

It is an arithmetic number, because the mean of its divisors is an integer number (75878400).

Almost surely, 2^3124212021 is an apocalyptic number.

It is an amenable number.

3124212021 is a deficient number, since it is larger than the sum of its proper divisors (2339032779).

3124212021 is a wasteful number, since it uses less digits than its factorization.

3124212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3124212021 is about 55894.6510947157. The cubic root of 3124212021 is about 1461.8859753326.

Adding to 3124212021 its reverse (1202124213), we get a palindrome (4326336234).

The spelling of 3124212021 in words is "three billion, one hundred twenty-four million, two hundred twelve thousand, twenty-one".