2110520105321 has 4 divisors (see below), whose sum is σ = 2113376019600. Its totient is φ = 2107664191044.

The previous prime is 2110520105297. The next prime is 2110520105327. The reversal of 2110520105321 is 1235010250112.

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 a de Polignac number, because none of the positive numbers 2^k-2110520105321 is a prime.

It is a super-2 number, since 2×2110520105321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2110520105327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427956031 + ... + 1427957508.

It is an arithmetic number, because the mean of its divisors is an integer number (528344004900).

Almost surely, 2^{2110520105321} is an apocalyptic number.

It is an amenable number.

2110520105321 is a deficient number, since it is larger than the sum of its proper divisors (2855914279).

2110520105321 is an equidigital number, since it uses as much as digits as its factorization.

2110520105321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855914278.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 2110520105321 its reverse (1235010250112), we get a palindrome (3345530355433).

The spelling of 2110520105321 in words is "two trillion, one hundred ten billion, five hundred twenty million, one hundred five thousand, three hundred twenty-one".