2103525021 has 32 divisors (see below), whose sum is σ = 3067384320. Its totient is φ = 1274457600.

The previous prime is 2103524993. The next prime is 2103525031. The reversal of 2103525021 is 1205253012.

It is not a de Polignac number, because 2103525021 - 2¹¹ = 2103522973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103525031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1419601 + ... + 1421081.

It is an arithmetic number, because the mean of its divisors is an integer number (95855760).

Almost surely, 2^2103525021 is an apocalyptic number.

It is an amenable number.

2103525021 is a deficient number, since it is larger than the sum of its proper divisors (963859299).

2103525021 is a wasteful number, since it uses less digits than its factorization.

2103525021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2103525021 is about 45864.2019553377. The cubic root of 2103525021 is about 1281.2952832506.

Adding to 2103525021 its reverse (1205253012), we get a palindrome (3308778033).

It can be divided in two parts, 21035 and 25021, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 2103525021 in words is "two billion, one hundred three million, five hundred twenty-five thousand, twenty-one".