1211342227 has 2 divisors, whose sum is σ = 1211342228. Its totient is φ = 1211342226.

The previous prime is 1211342221. The next prime is 1211342263. The reversal of 1211342227 is 7222431121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211342227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211342221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605671113 + 605671114.

It is an arithmetic number, because the mean of its divisors is an integer number (605671114).

Almost surely, 2^1211342227 is an apocalyptic number.

1211342227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211342227 is an equidigital number, since it uses as much as digits as its factorization.

1211342227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 1211342227 is about 34804.3420710692. The cubic root of 1211342227 is about 1065.9961077196.

Adding to 1211342227 its reverse (7222431121), we get a palindrome (8433773348).

The spelling of 1211342227 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, two hundred twenty-seven".