125041221 has 12 divisors (see below), whose sum is σ = 180762400. Its totient is φ = 83292840.

The previous prime is 125041201. The next prime is 125041249. The reversal of 125041221 is 122140521.

125041221 is a `hidden beast` number, since 1 + 250 + 412 + 2 + 1 = 666.

It is not a de Polignac number, because 125041221 - 2⁶ = 125041157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125041194 and 125041203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125041201) 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, 7626 + ... + 17556.

Almost surely, 2^125041221 is an apocalyptic number.

It is an amenable number.

125041221 is a deficient number, since it is larger than the sum of its proper divisors (55721179).

125041221 is a wasteful number, since it uses less digits than its factorization.

125041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11336 (or 11333 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 125041221 is about 11182.1831947076. The cubic root of 125041221 is about 500.0549552929.

Adding to 125041221 its reverse (122140521), we get a palindrome (247181742).

The spelling of 125041221 in words is "one hundred twenty-five million, forty-one thousand, two hundred twenty-one".