105426213213 has 4 divisors (see below), whose sum is σ = 140568284288. Its totient is φ = 70284142140.

The previous prime is 105426213209. The next prime is 105426213239. The reversal of 105426213213 is 312312624501.

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 not a de Polignac number, because 105426213213 - 2² = 105426213209 is a prime.

It is a super-2 number, since 2×105426213213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105426213203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17571035533 + ... + 17571035538.

It is an arithmetic number, because the mean of its divisors is an integer number (35142071072).

Almost surely, 2^105426213213 is an apocalyptic number.

It is an amenable number.

105426213213 is a deficient number, since it is larger than the sum of its proper divisors (35142071075).

105426213213 is an equidigital number, since it uses as much as digits as its factorization.

105426213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35142071074.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 105426213213 its reverse (312312624501), we get a palindrome (417738837714).

The spelling of 105426213213 in words is "one hundred five billion, four hundred twenty-six million, two hundred thirteen thousand, two hundred thirteen".