2120548521 has 64 divisors (see below), whose sum is σ = 3607740416. Its totient is φ = 1077753600.

The previous prime is 2120548511. The next prime is 2120548537. The reversal of 2120548521 is 1258450212.

It is not a de Polignac number, because 2120548521 - 2¹¹ = 2120546473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2120548511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2800875 + ... + 2801631.

It is an arithmetic number, because the mean of its divisors is an integer number (56370944).

Almost surely, 2^2120548521 is an apocalyptic number.

2120548521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2120548521 is a deficient number, since it is larger than the sum of its proper divisors (1487191895).

2120548521 is a wasteful number, since it uses less digits than its factorization.

2120548521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 2120548521 is about 46049.4139050651. The cubic root of 2120548521 is about 1284.7424417813.

Adding to 2120548521 its reverse (1258450212), we get a palindrome (3378998733).

The spelling of 2120548521 in words is "two billion, one hundred twenty million, five hundred forty-eight thousand, five hundred twenty-one".