105111231415 has 4 divisors (see below), whose sum is σ = 126133477704. Its totient is φ = 84088985128.

The previous prime is 105111231403. The next prime is 105111231481. The reversal of 105111231415 is 514132111501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105111231415 - 2¹⁹ = 105110707127 is a prime.

It is a super-2 number, since 2×105111231415² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105111231415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10511123137 + ... + 10511123146.

It is an arithmetic number, because the mean of its divisors is an integer number (31533369426).

Almost surely, 2^105111231415 is an apocalyptic number.

105111231415 is a deficient number, since it is larger than the sum of its proper divisors (21022246289).

105111231415 is an equidigital number, since it uses as much as digits as its factorization.

105111231415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21022246288.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 105111231415 its reverse (514132111501), we get a palindrome (619243342916).

The spelling of 105111231415 in words is "one hundred five billion, one hundred eleven million, two hundred thirty-one thousand, four hundred fifteen".