20212124854185 has 96 divisors (see below), whose sum is σ = 38849086463616. Its totient is φ = 9638358912000.

The previous prime is 20212124854177. The next prime is 20212124854189. The reversal of 20212124854185 is 58145842121202.

20212124854185 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 2 + 1 + 24 + 8 + 541 + 85 = 666.

It is not a de Polignac number, because 20212124854185 - 2³ = 20212124854177 is a prime.

It is a super-2 number, since 2×20212124854185² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20212124854185.

It is not an unprimeable number, because it can be changed into a prime (20212124854189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 522082389 + ... + 522121101.

It is an arithmetic number, because the mean of its divisors is an integer number (404677983996).

Almost surely, 2^{20212124854185} is an apocalyptic number.

It is an amenable number.

20212124854185 is a deficient number, since it is larger than the sum of its proper divisors (18636961609431).

20212124854185 is a wasteful number, since it uses less digits than its factorization.

20212124854185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56087 (or 56084 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 45.

Adding to 20212124854185 its reverse (58145842121202), we get a palindrome (78357966975387).

The spelling of 20212124854185 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-four million, eight hundred fifty-four thousand, one hundred eighty-five".