1227241121 has 2 divisors, whose sum is σ = 1227241122. Its totient is φ = 1227241120.

The previous prime is 1227241117. The next prime is 1227241163. The reversal of 1227241121 is 1211427221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909866896 + 317374225 = 30164^2 + 17815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227241121 - 2² = 1227241117 is a prime.

It is a super-2 number, since 2×1227241121² = 3012241538146673282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1227244121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613620560 + 613620561.

It is an arithmetic number, because the mean of its divisors is an integer number (613620561).

Almost surely, 2^1227241121 is an apocalyptic number.

It is an amenable number.

1227241121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227241121 is an equidigital number, since it uses as much as digits as its factorization.

1227241121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 23.

The square root of 1227241121 is about 35032.0013844485. The cubic root of 1227241121 is about 1070.6395922779.

Adding to 1227241121 its reverse (1211427221), we get a palindrome (2438668342).

The spelling of 1227241121 in words is "one billion, two hundred twenty-seven million, two hundred forty-one thousand, one hundred twenty-one".