221250065357353 has 2 divisors, whose sum is σ = 221250065357354. Its totient is φ = 221250065357352.

The previous prime is 221250065357303. The next prime is 221250065357393. The reversal of 221250065357353 is 353753560052122.

221250065357353 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., 219537325171264 + 1712740186089 = 14816792^2 + 1308717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221250065357353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221250065357297 and 221250065357306.

It is not a weakly prime, because it can be changed into another prime (221250065357303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110625032678676 + 110625032678677.

It is an arithmetic number, because the mean of its divisors is an integer number (110625032678677).

Almost surely, 2^{221250065357353} is an apocalyptic number.

It is an amenable number.

221250065357353 is a deficient number, since it is larger than the sum of its proper divisors (1).

221250065357353 is an equidigital number, since it uses as much as digits as its factorization.

221250065357353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670000, while the sum is 49.

The spelling of 221250065357353 in words is "two hundred twenty-one trillion, two hundred fifty billion, sixty-five million, three hundred fifty-seven thousand, three hundred fifty-three".