3220003121 has 4 divisors (see below), whose sum is σ = 3234064500. Its totient is φ = 3205941744.

The previous prime is 3220003103. The next prime is 3220003123. The reversal of 3220003121 is 1213000223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1213000223 = 19 ⋅63842117.

It can be written as a sum of positive squares in 2 ways, for example, as 1973136400 + 1246866721 = 44420^2 + 35311^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220003121 - 2³⁰ = 2146261297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3220003096 and 3220003105.

It is not an unprimeable number, because it can be changed into a prime (3220003123) 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, 7030346 + ... + 7030803.

It is an arithmetic number, because the mean of its divisors is an integer number (808516125).

Almost surely, 2^3220003121 is an apocalyptic number.

It is an amenable number.

3220003121 is a deficient number, since it is larger than the sum of its proper divisors (14061379).

3220003121 is a wasteful number, since it uses less digits than its factorization.

3220003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14061378.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3220003121 is about 56745.0713366368. The cubic root of 3220003121 is about 1476.6767290245.

Adding to 3220003121 its reverse (1213000223), we get a palindrome (4433003344).

The spelling of 3220003121 in words is "three billion, two hundred twenty million, three thousand, one hundred twenty-one".