2121425015 has 8 divisors (see below), whose sum is σ = 2627829888. Its totient is φ = 1642393440.

The previous prime is 2121424997. The next prime is 2121425021. The reversal of 2121425015 is 5105241212.

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

It is not a de Polignac number, because 2121425015 - 2¹⁰ = 2121423991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6843152 + ... + 6843461.

It is an arithmetic number, because the mean of its divisors is an integer number (328478736).

Almost surely, 2^2121425015 is an apocalyptic number.

2121425015 is a deficient number, since it is larger than the sum of its proper divisors (506404873).

2121425015 is a wasteful number, since it uses less digits than its factorization.

2121425015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13686649.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2121425015 is about 46058.9298073674. The cubic root of 2121425015 is about 1284.9194264810.

Adding to 2121425015 its reverse (5105241212), we get a palindrome (7226666227).

The spelling of 2121425015 in words is "two billion, one hundred twenty-one million, four hundred twenty-five thousand, fifteen".