2102052233521 has 4 divisors (see below), whose sum is σ = 2117174911600. Its totient is φ = 2086929555444.

The previous prime is 2102052233513. The next prime is 2102052233527. The reversal of 2102052233521 is 1253322502012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102052233521 - 2³ = 2102052233513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102052233521.

It is not an unprimeable number, because it can be changed into a prime (2102052233527) 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 3 ways as a sum of consecutive naturals, for example, 7561338831 + ... + 7561339108.

It is an arithmetic number, because the mean of its divisors is an integer number (529293727900).

Almost surely, 2^{2102052233521} is an apocalyptic number.

It is an amenable number.

2102052233521 is a deficient number, since it is larger than the sum of its proper divisors (15122678079).

2102052233521 is a wasteful number, since it uses less digits than its factorization.

2102052233521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15122678078.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 2102052233521 its reverse (1253322502012), we get a palindrome (3355374735533).

The spelling of 2102052233521 in words is "two trillion, one hundred two billion, fifty-two million, two hundred thirty-three thousand, five hundred twenty-one".