2101521241 has 16 divisors (see below), whose sum is σ = 2177936640. Its totient is φ = 2026483200.

The previous prime is 2101521211. The next prime is 2101521307. The reversal of 2101521241 is 1421251012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101521241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101521211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2922480 + ... + 2923198.

It is an arithmetic number, because the mean of its divisors is an integer number (136121040).

Almost surely, 2^2101521241 is an apocalyptic number.

It is an amenable number.

2101521241 is a deficient number, since it is larger than the sum of its proper divisors (76415399).

2101521241 is a wasteful number, since it uses less digits than its factorization.

2101521241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2101521241 is about 45842.3520448068. The cubic root of 2101521241 is about 1280.8883077374. Note that the first 3 decimals are identical.

Adding to 2101521241 its reverse (1421251012), we get a palindrome (3522772253).

The spelling of 2101521241 in words is "two billion, one hundred one million, five hundred twenty-one thousand, two hundred forty-one".