221223341249 has 2 divisors, whose sum is σ = 221223341250. Its totient is φ = 221223341248.

The previous prime is 221223341111. The next prime is 221223341309. The reversal of 221223341249 is 942143322122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150985090624 + 70238250625 = 388568^2 + 265025^2 .

It is a cyclic number.

It is not a de Polignac number, because 221223341249 - 2²⁸ = 220954905793 is a prime.

It is not a weakly prime, because it can be changed into another prime (221223371249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611670624 + 110611670625.

It is an arithmetic number, because the mean of its divisors is an integer number (110611670625).

Almost surely, 2^221223341249 is an apocalyptic number.

It is an amenable number.

221223341249 is a deficient number, since it is larger than the sum of its proper divisors (1).

221223341249 is an equidigital number, since it uses as much as digits as its factorization.

221223341249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The spelling of 221223341249 in words is "two hundred twenty-one billion, two hundred twenty-three million, three hundred forty-one thousand, two hundred forty-nine".