125124322321 has 4 divisors (see below), whose sum is σ = 130564510272. Its totient is φ = 119684134372.

The previous prime is 125124322319. The next prime is 125124322439. The reversal of 125124322321 is 123223421521.

It is a happy number.

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 not a de Polignac number, because 125124322321 - 2¹ = 125124322319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125124322321.

It is not an unprimeable number, because it can be changed into a prime (125124352321) 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, 2720093941 + ... + 2720093986.

It is an arithmetic number, because the mean of its divisors is an integer number (32641127568).

Almost surely, 2^125124322321 is an apocalyptic number.

It is an amenable number.

125124322321 is a deficient number, since it is larger than the sum of its proper divisors (5440187951).

125124322321 is an equidigital number, since it uses as much as digits as its factorization.

125124322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440187950.

The product of its digits is 5760, while the sum is 28.

Adding to 125124322321 its reverse (123223421521), we get a palindrome (248347743842).

The spelling of 125124322321 in words is "one hundred twenty-five billion, one hundred twenty-four million, three hundred twenty-two thousand, three hundred twenty-one".