2105665012 has 48 divisors (see below), whose sum is σ = 4099479552. Its totient is φ = 938314080.

The previous prime is 2105664941. The next prime is 2105665057.

2105665012 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655803 + ... + 659005.

It is an arithmetic number, because the mean of its divisors is an integer number (85405824).

Almost surely, 2^2105665012 is an apocalyptic number.

2105665012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2105665012 is a deficient number, since it is larger than the sum of its proper divisors (1993814540).

2105665012 is a wasteful number, since it uses less digits than its factorization.

2105665012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 2105665012 is about 45887.5256687479. The cubic root of 2105665012 is about 1281.7296384466.

It can be divided in two parts, 21056 and 65012, that added together give a palindrome (86068).

The spelling of 2105665012 in words is "two billion, one hundred five million, six hundred sixty-five thousand, twelve".