3222121421 has 2 divisors, whose sum is σ = 3222121422. Its totient is φ = 3222121420.

The previous prime is 3222121411. The next prime is 3222121453. The reversal of 3222121421 is 1241212223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2640829321 + 581292100 = 51389^2 + 24110^2 .

It is an emirp because it is prime and its reverse (1241212223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3222121421 - 2¹⁰ = 3222120397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3222121393 and 3222121402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3222121411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611060710 + 1611060711.

It is an arithmetic number, because the mean of its divisors is an integer number (1611060711).

Almost surely, 2^3222121421 is an apocalyptic number.

It is an amenable number.

3222121421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3222121421 is an equidigital number, since it uses as much as digits as its factorization.

3222121421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3222121421 is about 56763.7333250730. The cubic root of 3222121421 is about 1477.0004718402. Note that the first 3 decimals are identical.

Adding to 3222121421 its reverse (1241212223), we get a palindrome (4463333644).

The spelling of 3222121421 in words is "three billion, two hundred twenty-two million, one hundred twenty-one thousand, four hundred twenty-one".