2121425475982 has 16 divisors (see below), whose sum is σ = 3191695165152. Its totient is φ = 1057527313920.

The previous prime is 2121425475973. The next prime is 2121425475989. The reversal of 2121425475982 is 2895745241212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121425475989) 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, 34014607 + ... + 34076917.

It is an arithmetic number, because the mean of its divisors is an integer number (199480947822).

Almost surely, 2^{2121425475982} is an apocalyptic number.

2121425475982 is a deficient number, since it is larger than the sum of its proper divisors (1070269689170).

2121425475982 is a wasteful number, since it uses less digits than its factorization.

2121425475982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113163.

The product of its digits is 3225600, while the sum is 52.

The spelling of 2121425475982 in words is "two trillion, one hundred twenty-one billion, four hundred twenty-five million, four hundred seventy-five thousand, nine hundred eighty-two".