3251201021 has 2 divisors, whose sum is σ = 3251201022. Its totient is φ = 3251201020.

The previous prime is 3251201011. The next prime is 3251201027. The reversal of 3251201021 is 1201021523.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1873677796 + 1377523225 = 43286^2 + 37115^2 .

It is a cyclic number.

It is not a de Polignac number, because 3251201021 - 2¹⁸ = 3250938877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3251201027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1625600510 + 1625600511.

It is an arithmetic number, because the mean of its divisors is an integer number (1625600511).

Almost surely, 2^3251201021 is an apocalyptic number.

It is an amenable number.

3251201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3251201021 is an equidigital number, since it uses as much as digits as its factorization.

3251201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 3251201021 is about 57019.3039329664. The cubic root of 3251201021 is about 1481.4304742959.

Adding to 3251201021 its reverse (1201021523), we get a palindrome (4452222544).

The spelling of 3251201021 in words is "three billion, two hundred fifty-one million, two hundred one thousand, twenty-one".