3225120221 has 2 divisors, whose sum is σ = 3225120222. Its totient is φ = 3225120220.

The previous prime is 3225120209. The next prime is 3225120233. The reversal of 3225120221 is 1220215223.

It is a balanced prime because it is at equal distance from previous prime (3225120209) and next prime (3225120233).

It can be written as a sum of positive squares in only one way, i.e., 2856902500 + 368217721 = 53450^2 + 19189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3225120221 is a prime.

It is a super-4 number, since 4×3225120221⁴ (a number of 39 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3225120193 and 3225120202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3225120251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1612560110 + 1612560111.

It is an arithmetic number, because the mean of its divisors is an integer number (1612560111).

Almost surely, 2^3225120221 is an apocalyptic number.

It is an amenable number.

3225120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3225120221 is an equidigital number, since it uses as much as digits as its factorization.

3225120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 3225120221 is about 56790.1419350225. The cubic root of 3225120221 is about 1477.4585402021.

Adding to 3225120221 its reverse (1220215223), we get a palindrome (4445335444).

The spelling of 3225120221 in words is "three billion, two hundred twenty-five million, one hundred twenty thousand, two hundred twenty-one".