2105401312312 has 16 divisors (see below), whose sum is σ = 3948091305840. Its totient is φ = 1052576964096.

The previous prime is 2105401312283. The next prime is 2105401312321. The reversal of 2105401312312 is 2132131045012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15389148 + ... + 15525355.

It is an arithmetic number, because the mean of its divisors is an integer number (246755706615).

Almost surely, 2^{2105401312312} is an apocalyptic number.

It is an amenable number.

2105401312312 is a deficient number, since it is larger than the sum of its proper divisors (1842689993528).

2105401312312 is a wasteful number, since it uses less digits than its factorization.

2105401312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30923022 (or 30923018 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 2105401312312 its reverse (2132131045012), we get a palindrome (4237532357324).

The spelling of 2105401312312 in words is "two trillion, one hundred five billion, four hundred one million, three hundred twelve thousand, three hundred twelve".