105121571 has 2 divisors, whose sum is σ = 105121572. Its totient is φ = 105121570.

The previous prime is 105121567. The next prime is 105121573. The reversal of 105121571 is 175121501.

It is a strong prime.

It is an emirp because it is prime and its reverse (175121501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105121571 - 2² = 105121567 is a prime.

It is a super-2 number, since 2×105121571² = 22101089379016082, which contains 22 as substring.

Together with 105121573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105121573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52560785 + 52560786.

It is an arithmetic number, because the mean of its divisors is an integer number (52560786).

Almost surely, 2^105121571 is an apocalyptic number.

105121571 is a deficient number, since it is larger than the sum of its proper divisors (1).

105121571 is an equidigital number, since it uses as much as digits as its factorization.

105121571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 23.

The square root of 105121571 is about 10252.8811072791. The cubic root of 105121571 is about 471.9514023387.

It can be divided in two parts, 1051 and 21571, that added together give a palindrome (22622).

The spelling of 105121571 in words is "one hundred five million, one hundred twenty-one thousand, five hundred seventy-one".