3120002000221 has 2 divisors, whose sum is σ = 3120002000222. Its totient is φ = 3120002000220.

The previous prime is 3120002000197. The next prime is 3120002000233. The reversal of 3120002000221 is 1220002000213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001460972900 + 1118541027321 = 1414730^2 + 1057611^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120002000221 - 2¹⁹ = 3120001475933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120002000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560001000110 + 1560001000111.

It is an arithmetic number, because the mean of its divisors is an integer number (1560001000111).

Almost surely, 2^{3120002000221} is an apocalyptic number.

It is an amenable number.

3120002000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120002000221 is an equidigital number, since it uses as much as digits as its factorization.

3120002000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 3120002000221 its reverse (1220002000213), we get a palindrome (4340004000434).

The spelling of 3120002000221 in words is "three trillion, one hundred twenty billion, two million, two hundred twenty-one", and thus it is an aban number.