221411635025249 has 2 divisors, whose sum is σ = 221411635025250. Its totient is φ = 221411635025248.

The previous prime is 221411635025177. The next prime is 221411635025263. The reversal of 221411635025249 is 942520536114122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161889360780625 + 59522274244624 = 12723575^2 + 7715068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221411635025249 is a prime.

It is a super-2 number, since 2×221411635025249² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221411635025849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110705817512624 + 110705817512625.

It is an arithmetic number, because the mean of its divisors is an integer number (110705817512625).

Almost surely, 2^{221411635025249} is an apocalyptic number.

It is an amenable number.

221411635025249 is a deficient number, since it is larger than the sum of its proper divisors (1).

221411635025249 is an equidigital number, since it uses as much as digits as its factorization.

221411635025249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 221411635025249 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred thirty-five million, twenty-five thousand, two hundred forty-nine".