110513421521 has 4 divisors (see below), whose sum is σ = 110544012852. Its totient is φ = 110482830192.

The previous prime is 110513421503. The next prime is 110513421523. The reversal of 110513421521 is 125124315011.

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 50046611521 + 60466810000 = 223711^2 + 245900^2 .

It is a cyclic number.

It is not a de Polignac number, because 110513421521 - 2⁶ = 110513421457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110513421523) 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, 15290246 + ... + 15297471.

It is an arithmetic number, because the mean of its divisors is an integer number (27636003213).

Almost surely, 2^110513421521 is an apocalyptic number.

It is an amenable number.

110513421521 is a deficient number, since it is larger than the sum of its proper divisors (30591331).

110513421521 is an equidigital number, since it uses as much as digits as its factorization.

110513421521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30591330.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 110513421521 its reverse (125124315011), we get a palindrome (235637736532).

The spelling of 110513421521 in words is "one hundred ten billion, five hundred thirteen million, four hundred twenty-one thousand, five hundred twenty-one".