1228094213 has 2 divisors, whose sum is σ = 1228094214. Its totient is φ = 1228094212.

The previous prime is 1228094129. The next prime is 1228094237. The reversal of 1228094213 is 3124908221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1139602564 + 88491649 = 33758^2 + 9407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228094213 - 2²⁶ = 1160985349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228094213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228094293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614047106 + 614047107.

It is an arithmetic number, because the mean of its divisors is an integer number (614047107).

Almost surely, 2^1228094213 is an apocalyptic number.

It is an amenable number.

1228094213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228094213 is an equidigital number, since it uses as much as digits as its factorization.

1228094213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1228094213 is about 35044.1751650684. The cubic root of 1228094213 is about 1070.8876126829.

The spelling of 1228094213 in words is "one billion, two hundred twenty-eight million, ninety-four thousand, two hundred thirteen".