221411544049 has 2 divisors, whose sum is σ = 221411544050. Its totient is φ = 221411544048.

The previous prime is 221411544047. The next prime is 221411544077. The reversal of 221411544049 is 940445114122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219417296400 + 1994247649 = 468420^2 + 44657^2 .

It is a cyclic number.

It is not a de Polignac number, because 221411544049 - 2¹ = 221411544047 is a prime.

Together with 221411544047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 221411543999 and 221411544017.

It is not a weakly prime, because it can be changed into another prime (221411544047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110705772024 + 110705772025.

It is an arithmetic number, because the mean of its divisors is an integer number (110705772025).

Almost surely, 2^221411544049 is an apocalyptic number.

It is an amenable number.

221411544049 is a deficient number, since it is larger than the sum of its proper divisors (1).

221411544049 is an equidigital number, since it uses as much as digits as its factorization.

221411544049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 221411544049 in words is "two hundred twenty-one billion, four hundred eleven million, five hundred forty-four thousand, forty-nine".