2747172041221 has 2 divisors, whose sum is σ = 2747172041222. Its totient is φ = 2747172041220.

The previous prime is 2747172041209. The next prime is 2747172041269. The reversal of 2747172041221 is 1221402717472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2729599622500 + 17572418721 = 1652150^2 + 132561^2 .

It is a cyclic number.

It is not a de Polignac number, because 2747172041221 - 2¹⁹ = 2747171516933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2747172041291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1373586020610 + 1373586020611.

It is an arithmetic number, because the mean of its divisors is an integer number (1373586020611).

Almost surely, 2^{2747172041221} is an apocalyptic number.

It is an amenable number.

2747172041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2747172041221 is an equidigital number, since it uses as much as digits as its factorization.

2747172041221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 40.

Adding to 2747172041221 its reverse (1221402717472), we get a palindrome (3968574758693).

The spelling of 2747172041221 in words is "two trillion, seven hundred forty-seven billion, one hundred seventy-two million, forty-one thousand, two hundred twenty-one".