124401665201 has 4 divisors (see below), whose sum is σ = 135710907504. Its totient is φ = 113092422900.

The previous prime is 124401665177. The next prime is 124401665203. The reversal of 124401665201 is 102566104421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124401665201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124401665203) 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, 5654621135 + ... + 5654621156.

It is an arithmetic number, because the mean of its divisors is an integer number (33927726876).

Almost surely, 2^124401665201 is an apocalyptic number.

124401665201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124401665201 is a deficient number, since it is larger than the sum of its proper divisors (11309242303).

124401665201 is a wasteful number, since it uses less digits than its factorization.

124401665201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11309242302.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 124401665201 its reverse (102566104421), we get a palindrome (226967769622).

The spelling of 124401665201 in words is "one hundred twenty-four billion, four hundred one million, six hundred sixty-five thousand, two hundred one".