2105214831180 has 144 divisors (see below), whose sum is σ = 6944197085280. Its totient is φ = 514087409664.

The previous prime is 2105214831179. The next prime is 2105214831281. The reversal of 2105214831180 is 811384125012.

It is a happy number.

2105214831180 is a `hidden beast` number, since 2 + 1 + 0 + 521 + 48 + 3 + 11 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 9183790 + ... + 9410229.

It is an arithmetic number, because the mean of its divisors is an integer number (48223590870).

Almost surely, 2^{2105214831180} is an apocalyptic number.

2105214831180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105214831180 is an abundant number, since it is smaller than the sum of its proper divisors (4838982254100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105214831180 is a wasteful number, since it uses less digits than its factorization.

2105214831180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18594088 (or 18594083 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

Adding to 2105214831180 its reverse (811384125012), we get a palindrome (2916598956192).

The spelling of 2105214831180 in words is "two trillion, one hundred five billion, two hundred fourteen million, eight hundred thirty-one thousand, one hundred eighty".