125105230224221 has 16 divisors (see below), whose sum is σ = 137064523921920. Its totient is φ = 113481117935040.

The previous prime is 125105230224157. The next prime is 125105230224223. The reversal of 125105230224221 is 122422032501521.

It is not a de Polignac number, because 125105230224221 - 2⁶ = 125105230224157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125105230224223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29105645 + ... + 33126258.

It is an arithmetic number, because the mean of its divisors is an integer number (8566532745120).

Almost surely, 2^{125105230224221} is an apocalyptic number.

It is an amenable number.

125105230224221 is a deficient number, since it is larger than the sum of its proper divisors (11959293697699).

125105230224221 is a wasteful number, since it uses less digits than its factorization.

125105230224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62234596.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 125105230224221 its reverse (122422032501521), we get a palindrome (247527262725742).

The spelling of 125105230224221 in words is "one hundred twenty-five trillion, one hundred five billion, two hundred thirty million, two hundred twenty-four thousand, two hundred twenty-one".