3122021 has 4 divisors (see below), whose sum is σ = 3568032. Its totient is φ = 2676012.

The previous prime is 3122017. The next prime is 3122059. The reversal of 3122021 is 1202213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1202213 = 47 ⋅25579.

It is a cyclic number.

It is not a de Polignac number, because 3122021 - 2² = 3122017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121993 and 3122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222995 + ... + 223008.

It is an arithmetic number, because the mean of its divisors is an integer number (892008).

Almost surely, 2^3122021 is an apocalyptic number.

It is an amenable number.

3122021 is a deficient number, since it is larger than the sum of its proper divisors (446011).

3122021 is an equidigital number, since it uses as much as digits as its factorization.

3122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446010.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3122021 is about 1766.9241636245. The cubic root of 3122021 is about 146.1544153469.

Adding to 3122021 its reverse (1202213), we get a palindrome (4324234).

The spelling of 3122021 in words is "three million, one hundred twenty-two thousand, twenty-one".