125121342231 has 12 divisors (see below), whose sum is σ = 180749455120. Its totient is φ = 83405630880.

The previous prime is 125121342191. The next prime is 125121342259. The reversal of 125121342231 is 132243121521.

It is a happy number.

125121342231 is a `hidden beast` number, since 1 + 25 + 1 + 213 + 422 + 3 + 1 = 666.

It is not a de Polignac number, because 125121342231 - 2²¹ = 125119245079 is a prime.

It is a super-2 number, since 2×125121342231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125121342195 and 125121342204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125121340231) 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 11 ways as a sum of consecutive naturals, for example, 623635 + ... + 799476.

Almost surely, 2^125121342231 is an apocalyptic number.

125121342231 is a deficient number, since it is larger than the sum of its proper divisors (55628112889).

125121342231 is a wasteful number, since it uses less digits than its factorization.

125121342231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432886 (or 1432883 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 125121342231 its reverse (132243121521), we get a palindrome (257364463752).

The spelling of 125121342231 in words is "one hundred twenty-five billion, one hundred twenty-one million, three hundred forty-two thousand, two hundred thirty-one".