1214228369 has 2 divisors, whose sum is σ = 1214228370. Its totient is φ = 1214228368.

The previous prime is 1214228359. The next prime is 1214228377. The reversal of 1214228369 is 9638224121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756910144 + 457318225 = 27512^2 + 21385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214228369 is a prime.

It is a super-2 number, since 2×1214228369² = 2948701064168800322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1214228339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607114184 + 607114185.

It is an arithmetic number, because the mean of its divisors is an integer number (607114185).

Almost surely, 2^1214228369 is an apocalyptic number.

It is an amenable number.

1214228369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214228369 is an equidigital number, since it uses as much as digits as its factorization.

1214228369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 1214228369 is about 34845.7797875152. The cubic root of 1214228369 is about 1066.8420497532.

The spelling of 1214228369 in words is "one billion, two hundred fourteen million, two hundred twenty-eight thousand, three hundred sixty-nine".