2105521041 has 16 divisors (see below), whose sum is σ = 3041869376. Its totient is φ = 1287752256.

The previous prime is 2105521037. The next prime is 2105521109. The reversal of 2105521041 is 1401255012.

It is not a de Polignac number, because 2105521041 - 2² = 2105521037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2105520999 and 2105521017.

It is not an unprimeable number, because it can be changed into a prime (2105521441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159250 + ... + 171963.

It is an arithmetic number, because the mean of its divisors is an integer number (190116836).

Almost surely, 2^2105521041 is an apocalyptic number.

It is an amenable number.

2105521041 is a deficient number, since it is larger than the sum of its proper divisors (936348335).

2105521041 is a wasteful number, since it uses less digits than its factorization.

2105521041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331392.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2105521041 is about 45885.9569040464. The cubic root of 2105521041 is about 1281.7004258063.

Adding to 2105521041 its reverse (1401255012), we get a palindrome (3506776053).

The spelling of 2105521041 in words is "two billion, one hundred five million, five hundred twenty-one thousand, forty-one".