125244123011 has 4 divisors (see below), whose sum is σ = 143136140592. Its totient is φ = 107352105432.

The previous prime is 125244122999. The next prime is 125244123013. The reversal of 125244123011 is 110321442521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110321442521 = 1033 ⋅106797137.

It is a cyclic number.

It is not a de Polignac number, because 125244123011 - 2¹⁴ = 125244106627 is a prime.

It is a super-2 number, since 2×125244123011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125244123013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8946008780 + ... + 8946008793.

It is an arithmetic number, because the mean of its divisors is an integer number (35784035148).

Almost surely, 2^125244123011 is an apocalyptic number.

125244123011 is a deficient number, since it is larger than the sum of its proper divisors (17892017581).

125244123011 is an equidigital number, since it uses as much as digits as its factorization.

125244123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17892017580.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 125244123011 its reverse (110321442521), we get a palindrome (235565565532).

The spelling of 125244123011 in words is "one hundred twenty-five billion, two hundred forty-four million, one hundred twenty-three thousand, eleven".