123125441021 has 8 divisors (see below), whose sum is σ = 136158645504. Its totient is φ = 110398900320.

The previous prime is 123125441003. The next prime is 123125441057. The reversal of 123125441021 is 120144521321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123125441021 - 2⁶ = 123125440957 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 (123125440021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76665101 + ... + 76666706.

It is an arithmetic number, because the mean of its divisors is an integer number (17019830688).

Almost surely, 2^123125441021 is an apocalyptic number.

123125441021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123125441021 is a deficient number, since it is larger than the sum of its proper divisors (13033204483).

123125441021 is a wasteful number, since it uses less digits than its factorization.

123125441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153331891.

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

Adding to 123125441021 its reverse (120144521321), we get a palindrome (243269962342).

The spelling of 123125441021 in words is "one hundred twenty-three billion, one hundred twenty-five million, four hundred forty-one thousand, twenty-one".