3201121213 has 2 divisors, whose sum is σ = 3201121214. Its totient is φ = 3201121212.

The previous prime is 3201121201. The next prime is 3201121219. The reversal of 3201121213 is 3121211023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1648603609 + 1552517604 = 40603^2 + 39402^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201121213 - 2¹⁷ = 3200990141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3201121219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600560606 + 1600560607.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560607).

Almost surely, 2^3201121213 is an apocalyptic number.

It is an amenable number.

3201121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3201121213 is an equidigital number, since it uses as much as digits as its factorization.

3201121213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3201121213 is about 56578.4518434359. The cubic root of 3201121213 is about 1473.7846870261.

Adding to 3201121213 its reverse (3121211023), we get a palindrome (6322332236).

The spelling of 3201121213 in words is "three billion, two hundred one million, one hundred twenty-one thousand, two hundred thirteen".