1224221311 has 2 divisors, whose sum is σ = 1224221312. Its totient is φ = 1224221310.

The previous prime is 1224221293. The next prime is 1224221329. The reversal of 1224221311 is 1131224221.

It is a balanced prime because it is at equal distance from previous prime (1224221293) and next prime (1224221329).

It is a cyclic number.

It is not a de Polignac number, because 1224221311 - 2⁹ = 1224220799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224221371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612110655 + 612110656.

It is an arithmetic number, because the mean of its divisors is an integer number (612110656).

Almost surely, 2^1224221311 is an apocalyptic number.

1224221311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224221311 is an equidigital number, since it uses as much as digits as its factorization.

1224221311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 1224221311 is about 34988.8741030631. The cubic root of 1224221311 is about 1069.7607148273.

Adding to 1224221311 its reverse (1131224221), we get a palindrome (2355445532).

The spelling of 1224221311 in words is "one billion, two hundred twenty-four million, two hundred twenty-one thousand, three hundred eleven".