2105251401101 has 32 divisors (see below), whose sum is σ = 2164229243520. Its totient is φ = 2047302107136.

The previous prime is 2105251401079. The next prime is 2105251401119. The reversal of 2105251401101 is 1011041525012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2105251401101 - 2⁶ = 2105251401037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105251401161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1413868565 + ... + 1413870053.

It is an arithmetic number, because the mean of its divisors is an integer number (67632163860).

Almost surely, 2^{2105251401101} is an apocalyptic number.

It is an amenable number.

2105251401101 is a deficient number, since it is larger than the sum of its proper divisors (58977842419).

2105251401101 is a wasteful number, since it uses less digits than its factorization.

2105251401101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 2105251401101 its reverse (1011041525012), we get a palindrome (3116292926113).

The spelling of 2105251401101 in words is "two trillion, one hundred five billion, two hundred fifty-one million, four hundred one thousand, one hundred one".