125020441021 has 4 divisors (see below), whose sum is σ = 142880504032. Its totient is φ = 107160378012.

The previous prime is 125020440997. The next prime is 125020441037. The reversal of 125020441021 is 120144020521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125020441021 - 2⁷ = 125020440893 is a prime.

It is a super-2 number, since 2×125020441021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125020440983 and 125020441001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125020442021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8930031495 + ... + 8930031508.

It is an arithmetic number, because the mean of its divisors is an integer number (35720126008).

Almost surely, 2^125020441021 is an apocalyptic number.

It is an amenable number.

125020441021 is a deficient number, since it is larger than the sum of its proper divisors (17860063011).

125020441021 is an equidigital number, since it uses as much as digits as its factorization.

125020441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17860063010.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 125020441021 its reverse (120144020521), we get a palindrome (245164461542).

The spelling of 125020441021 in words is "one hundred twenty-five billion, twenty million, four hundred forty-one thousand, twenty-one".