2110340045521 has 4 divisors (see below), whose sum is σ = 2113350517044. Its totient is φ = 2107329574000.

The previous prime is 2110340045519. The next prime is 2110340045549. The reversal of 2110340045521 is 1255400430112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1589112360000 + 521227685521 = 1260600^2 + 721961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110340045521 - 2¹ = 2110340045519 is a prime.

It is a super-2 number, since 2×2110340045521² (a number of 25 digits) contains 22 as substring.

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 2110340045521.

It is not an unprimeable number, because it can be changed into a prime (2110340045501) 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, 1505234710 + ... + 1505236111.

It is an arithmetic number, because the mean of its divisors is an integer number (528337629261).

Almost surely, 2^{2110340045521} is an apocalyptic number.

It is an amenable number.

2110340045521 is a deficient number, since it is larger than the sum of its proper divisors (3010471523).

2110340045521 is an equidigital number, since it uses as much as digits as its factorization.

2110340045521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010471522.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 2110340045521 its reverse (1255400430112), we get a palindrome (3365740475633).

The spelling of 2110340045521 in words is "two trillion, one hundred ten billion, three hundred forty million, forty-five thousand, five hundred twenty-one".