110021013 has 6 divisors (see below), whose sum is σ = 158919254. Its totient is φ = 73347336.

The previous prime is 110021011. The next prime is 110021033. The reversal of 110021013 is 310120011.

It can be written as a sum of positive squares in only one way, i.e., 109369764 + 651249 = 10458^2 + 807^2 .

It is not a de Polignac number, because 110021013 - 2¹ = 110021011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12224557 = 110021013 / (1 + 1 + 0 + 0 + 2 + 1 + 0 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110020986 and 110021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6112270 + ... + 6112287.

Almost surely, 2^110021013 is an apocalyptic number.

It is an amenable number.

110021013 is a deficient number, since it is larger than the sum of its proper divisors (48898241).

110021013 is a wasteful number, since it uses less digits than its factorization.

110021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224563 (or 12224560 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 110021013 is about 10489.0901893348. The cubic root of 110021013 is about 479.1724934927.

Adding to 110021013 its reverse (310120011), we get a palindrome (420141024).

The spelling of 110021013 in words is "one hundred ten million, twenty-one thousand, thirteen".