2105001531412 has 12 divisors (see below), whose sum is σ = 3967118270836. Its totient is φ = 971539168320.

The previous prime is 2105001531407. The next prime is 2105001531427. The reversal of 2105001531412 is 2141351005012.

It can be written as a sum of positive squares in 2 ways, for example, as 934307827216 + 1170693704196 = 966596^2 + 1081986^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20240399289 + ... + 20240399392.

Almost surely, 2^{2105001531412} is an apocalyptic number.

It is an amenable number.

2105001531412 is a deficient number, since it is larger than the sum of its proper divisors (1862116739424).

2105001531412 is a wasteful number, since it uses less digits than its factorization.

2105001531412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40480798698 (or 40480798696 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 2105001531412 its reverse (2141351005012), we get a palindrome (4246352536424).

The spelling of 2105001531412 in words is "two trillion, one hundred five billion, one million, five hundred thirty-one thousand, four hundred twelve".