273637224221 has 2 divisors, whose sum is σ = 273637224222. Its totient is φ = 273637224220.

The previous prime is 273637224197. The next prime is 273637224227. The reversal of 273637224221 is 122422736372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203388372196 + 70248852025 = 450986^2 + 265045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273637224221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273637224227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136818612110 + 136818612111.

It is an arithmetic number, because the mean of its divisors is an integer number (136818612111).

Almost surely, 2^273637224221 is an apocalyptic number.

It is an amenable number.

273637224221 is a deficient number, since it is larger than the sum of its proper divisors (1).

273637224221 is an equidigital number, since it uses as much as digits as its factorization.

273637224221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 41.

The spelling of 273637224221 in words is "two hundred seventy-three billion, six hundred thirty-seven million, two hundred twenty-four thousand, two hundred twenty-one".