2125122435021 has 8 divisors (see below), whose sum is σ = 2833531711360. Its totient is φ = 1416730724352.

The previous prime is 2125122434999. The next prime is 2125122435049. The reversal of 2125122435021 is 1205342215212.

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

It is not a de Polignac number, because 2125122435021 - 2⁷ = 2125122434893 is a prime.

It is a super-2 number, since 2×2125122435021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2125122435021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125122435221) 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, 4106485 + ... + 4594938.

It is an arithmetic number, because the mean of its divisors is an integer number (354191463920).

Almost surely, 2^{2125122435021} is an apocalyptic number.

It is an amenable number.

2125122435021 is a deficient number, since it is larger than the sum of its proper divisors (708409276339).

2125122435021 is an equidigital number, since it uses as much as digits as its factorization.

2125122435021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782835.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 2125122435021 in words is "two trillion, one hundred twenty-five billion, one hundred twenty-two million, four hundred thirty-five thousand, twenty-one".