124124211121 has 2 divisors, whose sum is σ = 124124211122. Its totient is φ = 124124211120.

The previous prime is 124124211053. The next prime is 124124211131. The reversal of 124124211121 is 121112421421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123436984896 + 687226225 = 351336^2 + 26215^2 .

It is an emirp because it is prime and its reverse (121112421421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124124211121 - 2⁷ = 124124210993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124124211092 and 124124211101.

It is not a weakly prime, because it can be changed into another prime (124124211131) 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, 62062105560 + 62062105561.

It is an arithmetic number, because the mean of its divisors is an integer number (62062105561).

Almost surely, 2^124124211121 is an apocalyptic number.

It is an amenable number.

124124211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

124124211121 is an equidigital number, since it uses as much as digits as its factorization.

124124211121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 22.

Adding to 124124211121 its reverse (121112421421), we get a palindrome (245236632542).

The spelling of 124124211121 in words is "one hundred twenty-four billion, one hundred twenty-four million, two hundred eleven thousand, one hundred twenty-one".