1224442331377 has 2 divisors, whose sum is σ = 1224442331378. Its totient is φ = 1224442331376.

The previous prime is 1224442331263. The next prime is 1224442331383. The reversal of 1224442331377 is 7731332444221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918681993441 + 305760337936 = 958479^2 + 552956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224442331377 - 2¹⁵ = 1224442298609 is a prime.

It is a super-2 number, since 2×1224442331377² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1224442334377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612221165688 + 612221165689.

It is an arithmetic number, because the mean of its divisors is an integer number (612221165689).

Almost surely, 2^{1224442331377} is an apocalyptic number.

It is an amenable number.

1224442331377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224442331377 is an equidigital number, since it uses as much as digits as its factorization.

1224442331377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 43.

Adding to 1224442331377 its reverse (7731332444221), we get a palindrome (8955774775598).

The spelling of 1224442331377 in words is "one trillion, two hundred twenty-four billion, four hundred forty-two million, three hundred thirty-one thousand, three hundred seventy-seven".