11255116250221 has 2 divisors, whose sum is σ = 11255116250222. Its totient is φ = 11255116250220.

The previous prime is 11255116250179. The next prime is 11255116250239. The reversal of 11255116250221 is 12205261155211.

11255116250221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9603862980100 + 1651253270121 = 3099010^2 + 1285011^2 .

It is a cyclic number.

It is not a de Polignac number, because 11255116250221 - 2¹⁵ = 11255116217453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11255116251221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5627558125110 + 5627558125111.

It is an arithmetic number, because the mean of its divisors is an integer number (5627558125111).

Almost surely, 2^{11255116250221} is an apocalyptic number.

It is an amenable number.

11255116250221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11255116250221 is an equidigital number, since it uses as much as digits as its factorization.

11255116250221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 34.

The spelling of 11255116250221 in words is "eleven trillion, two hundred fifty-five billion, one hundred sixteen million, two hundred fifty thousand, two hundred twenty-one".