12735753221 has 2 divisors, whose sum is σ = 12735753222. Its totient is φ = 12735753220.

The previous prime is 12735753203. The next prime is 12735753227. The reversal of 12735753221 is 12235753721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11580772996 + 1154980225 = 107614^2 + 33985^2 .

It is an emirp because it is prime and its reverse (12235753721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12735753221 - 2¹⁴ = 12735736837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12735753227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6367876610 + 6367876611.

It is an arithmetic number, because the mean of its divisors is an integer number (6367876611).

Almost surely, 2^12735753221 is an apocalyptic number.

It is an amenable number.

12735753221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12735753221 is an equidigital number, since it uses as much as digits as its factorization.

12735753221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 38.

The spelling of 12735753221 in words is "twelve billion, seven hundred thirty-five million, seven hundred fifty-three thousand, two hundred twenty-one".