105052440121 has 4 divisors (see below), whose sum is σ = 108441228544. Its totient is φ = 101663651700.

The previous prime is 105052440107. The next prime is 105052440149. The reversal of 105052440121 is 121044250501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121044250501 = 49199 ⋅2460299.

It is a cyclic number.

It is not a de Polignac number, because 105052440121 - 2¹⁵ = 105052407353 is a prime.

It is a super-2 number, since 2×105052440121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105052449121) 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, 1694394165 + ... + 1694394226.

It is an arithmetic number, because the mean of its divisors is an integer number (27110307136).

Almost surely, 2^105052440121 is an apocalyptic number.

It is an amenable number.

105052440121 is a deficient number, since it is larger than the sum of its proper divisors (3388788423).

105052440121 is an equidigital number, since it uses as much as digits as its factorization.

105052440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388788422.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 105052440121 its reverse (121044250501), we get a palindrome (226096690622).

The spelling of 105052440121 in words is "one hundred five billion, fifty-two million, four hundred forty thousand, one hundred twenty-one".