2125421066919 has 16 divisors (see below), whose sum is σ = 2858632455168. Its totient is φ = 1404624768672.

The previous prime is 2125421066917. The next prime is 2125421066929. The reversal of 2125421066919 is 9196601245212.

It is not a de Polignac number, because 2125421066919 - 2¹ = 2125421066917 is a prime.

It is a super-2 number, since 2×2125421066919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125421066917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5595912 + ... + 5963645.

It is an arithmetic number, because the mean of its divisors is an integer number (178664528448).

Almost surely, 2^{2125421066919} is an apocalyptic number.

2125421066919 is a deficient number, since it is larger than the sum of its proper divisors (733211388249).

2125421066919 is a wasteful number, since it uses less digits than its factorization.

2125421066919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560094.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 2125421066919 in words is "two trillion, one hundred twenty-five billion, four hundred twenty-one million, sixty-six thousand, nine hundred nineteen".