124401444220013 has 4 divisors (see below), whose sum is σ = 126440812158108. Its totient is φ = 122362076281920.

The previous prime is 124401444220007. The next prime is 124401444220051. The reversal of 124401444220013 is 310022444104421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16677242753284 + 107724201466729 = 4083778^2 + 10379027^2 .

It is a cyclic number.

It is not a de Polignac number, because 124401444220013 - 2¹⁴ = 124401444203629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124401444220213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019683968956 + ... + 1019683969077.

It is an arithmetic number, because the mean of its divisors is an integer number (31610203039527).

Almost surely, 2^{124401444220013} is an apocalyptic number.

It is an amenable number.

124401444220013 is a deficient number, since it is larger than the sum of its proper divisors (2039367938095).

124401444220013 is an equidigital number, since it uses as much as digits as its factorization.

124401444220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039367938094.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 124401444220013 its reverse (310022444104421), we get a palindrome (434423888324434).

The spelling of 124401444220013 in words is "one hundred twenty-four trillion, four hundred one billion, four hundred forty-four million, two hundred twenty thousand, thirteen".