105343000121 has 4 divisors (see below), whose sum is σ = 105360619044. Its totient is φ = 105325381200.

The previous prime is 105343000031. The next prime is 105343000153. The reversal of 105343000121 is 121000343501.

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 32531533225 + 72811466896 = 180365^2 + 269836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105343000121 is a prime.

It is a super-2 number, since 2×105343000121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 105343000093 and 105343000102.

It is not an unprimeable number, because it can be changed into a prime (105343000421) 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, 8800490 + ... + 8812451.

It is an arithmetic number, because the mean of its divisors is an integer number (26340154761).

Almost surely, 2^105343000121 is an apocalyptic number.

It is an amenable number.

105343000121 is a deficient number, since it is larger than the sum of its proper divisors (17618923).

105343000121 is an equidigital number, since it uses as much as digits as its factorization.

105343000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17618922.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 105343000121 its reverse (121000343501), we get a palindrome (226343343622).

The spelling of 105343000121 in words is "one hundred five billion, three hundred forty-three million, one hundred twenty-one", and thus it is an aban number.