2223221549 has 2 divisors, whose sum is σ = 2223221550. Its totient is φ = 2223221548.

The previous prime is 2223221543. The next prime is 2223221557. The reversal of 2223221549 is 9451223222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2161599049 + 61622500 = 46493^2 + 7850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2223221549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2223221543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111610774 + 1111610775.

It is an arithmetic number, because the mean of its divisors is an integer number (1111610775).

Almost surely, 2^2223221549 is an apocalyptic number.

It is an amenable number.

2223221549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223221549 is an equidigital number, since it uses as much as digits as its factorization.

2223221549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 2223221549 is about 47151.0503488523. The cubic root of 2223221549 is about 1305.1514626782.

The spelling of 2223221549 in words is "two billion, two hundred twenty-three million, two hundred twenty-one thousand, five hundred forty-nine".