124444111381 has 2 divisors, whose sum is σ = 124444111382. Its totient is φ = 124444111380.

The previous prime is 124444111333. The next prime is 124444111391. The reversal of 124444111381 is 183111444421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75396922225 + 49047189156 = 274585^2 + 221466^2 .

It is an emirp because it is prime and its reverse (183111444421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124444111381 is a prime.

It is a super-2 number, since 2×124444111381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124444111391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62222055690 + 62222055691.

It is an arithmetic number, because the mean of its divisors is an integer number (62222055691).

Almost surely, 2^124444111381 is an apocalyptic number.

It is an amenable number.

124444111381 is a deficient number, since it is larger than the sum of its proper divisors (1).

124444111381 is an equidigital number, since it uses as much as digits as its factorization.

124444111381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 34.

The spelling of 124444111381 in words is "one hundred twenty-four billion, four hundred forty-four million, one hundred eleven thousand, three hundred eighty-one".