221103223249 has 2 divisors, whose sum is σ = 221103223250. Its totient is φ = 221103223248.

The previous prime is 221103223241. The next prime is 221103223261. The reversal of 221103223249 is 942322301122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152144463249 + 68958760000 = 390057^2 + 262600^2 .

It is a cyclic number.

It is not a de Polignac number, because 221103223249 - 2³ = 221103223241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221103223249.

It is not a weakly prime, because it can be changed into another prime (221103223241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551611624 + 110551611625.

It is an arithmetic number, because the mean of its divisors is an integer number (110551611625).

Almost surely, 2^221103223249 is an apocalyptic number.

It is an amenable number.

221103223249 is a deficient number, since it is larger than the sum of its proper divisors (1).

221103223249 is an equidigital number, since it uses as much as digits as its factorization.

221103223249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 221103223249 in words is "two hundred twenty-one billion, one hundred three million, two hundred twenty-three thousand, two hundred forty-nine".