221122221049 has 2 divisors, whose sum is σ = 221122221050. Its totient is φ = 221122221048.

The previous prime is 221122220987. The next prime is 221122221071. The reversal of 221122221049 is 940122221122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195050306025 + 26071915024 = 441645^2 + 161468^2 .

It is a cyclic number.

It is not a de Polignac number, because 221122221049 - 2²⁹ = 220585350137 is a prime.

It is not a weakly prime, because it can be changed into another prime (221122221149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110561110524 + 110561110525.

It is an arithmetic number, because the mean of its divisors is an integer number (110561110525).

Almost surely, 2^221122221049 is an apocalyptic number.

It is an amenable number.

221122221049 is a deficient number, since it is larger than the sum of its proper divisors (1).

221122221049 is an equidigital number, since it uses as much as digits as its factorization.

221122221049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 221122221049 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, forty-nine".