12010813 has 4 divisors (see below), whose sum is σ = 12049020. Its totient is φ = 11972608.

The previous prime is 12010799. The next prime is 12010841. The reversal of 12010813 is 31801021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31801021 = 7 ⋅4543003.

It can be written as a sum of positive squares in 2 ways, for example, as 1532644 + 10478169 = 1238^2 + 3237^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010813 - 2⁵ = 12010781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010013) 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, 18628 + ... + 19261.

It is an arithmetic number, because the mean of its divisors is an integer number (3012255).

Almost surely, 2^12010813 is an apocalyptic number.

It is an amenable number.

12010813 is a deficient number, since it is larger than the sum of its proper divisors (38207).

12010813 is an equidigital number, since it uses as much as digits as its factorization.

12010813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38206.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 12010813 is about 3465.6619858261. The cubic root of 12010813 is about 229.0115933949.

Adding to 12010813 its reverse (31801021), we get a palindrome (43811834).

The spelling of 12010813 in words is "twelve million, ten thousand, eight hundred thirteen".