105121255 has 16 divisors (see below), whose sum is σ = 130217184. Its totient is φ = 81406080.

The previous prime is 105121249. The next prime is 105121267. The reversal of 105121255 is 552121501.

It is a happy number.

It is not a de Polignac number, because 105121255 - 2⁷ = 105121127 is a prime.

It is a super-2 number, since 2×105121255² = 22100956505550050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37689 + ... + 40381.

It is an arithmetic number, because the mean of its divisors is an integer number (8138574).

Almost surely, 2^105121255 is an apocalyptic number.

105121255 is a deficient number, since it is larger than the sum of its proper divisors (25095929).

105121255 is a wasteful number, since it uses less digits than its factorization.

105121255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 105121255 is about 10252.8656969649. The cubic root of 105121255 is about 471.9509294361.

Adding to 105121255 its reverse (552121501), we get a palindrome (657242756).

The spelling of 105121255 in words is "one hundred five million, one hundred twenty-one thousand, two hundred fifty-five".