1212213227 has 2 divisors, whose sum is σ = 1212213228. Its totient is φ = 1212213226.

The previous prime is 1212213193. The next prime is 1212213241. The reversal of 1212213227 is 7223122121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212213227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212213287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106613 + 606106614.

It is an arithmetic number, because the mean of its divisors is an integer number (606106614).

Almost surely, 2^1212213227 is an apocalyptic number.

1212213227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212213227 is an equidigital number, since it uses as much as digits as its factorization.

1212213227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 1212213227 is about 34816.8526291507. The cubic root of 1212213227 is about 1066.2515434229.

Adding to 1212213227 its reverse (7223122121), we get a palindrome (8435335348).

The spelling of 1212213227 in words is "one billion, two hundred twelve million, two hundred thirteen thousand, two hundred twenty-seven".