12421341377 has 2 divisors, whose sum is σ = 12421341378. Its totient is φ = 12421341376.

The previous prime is 12421341349. The next prime is 12421341469. The reversal of 12421341377 is 77314312421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12361881856 + 59459521 = 111184^2 + 7711^2 .

It is a cyclic number.

It is not a de Polignac number, because 12421341377 - 2²² = 12417147073 is a prime.

It is a super-2 number, since 2×12421341377² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12421341307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210670688 + 6210670689.

It is an arithmetic number, because the mean of its divisors is an integer number (6210670689).

Almost surely, 2^12421341377 is an apocalyptic number.

It is an amenable number.

12421341377 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421341377 is an equidigital number, since it uses as much as digits as its factorization.

12421341377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

Adding to 12421341377 its reverse (77314312421), we get a palindrome (89735653798).

The spelling of 12421341377 in words is "twelve billion, four hundred twenty-one million, three hundred forty-one thousand, three hundred seventy-seven".