105121451 has 2 divisors, whose sum is σ = 105121452. Its totient is φ = 105121450.

The previous prime is 105121447. The next prime is 105121463. The reversal of 105121451 is 154121501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105121451 - 2² = 105121447 is a prime.

It is a super-2 number, since 2×105121451² = 22101038920690802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105121411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52560725 + 52560726.

It is an arithmetic number, because the mean of its divisors is an integer number (52560726).

Almost surely, 2^105121451 is an apocalyptic number.

105121451 is a deficient number, since it is larger than the sum of its proper divisors (1).

105121451 is an equidigital number, since it uses as much as digits as its factorization.

105121451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 105121451 is about 10252.8752552638. The cubic root of 105121451 is about 471.9512227556.

Adding to 105121451 its reverse (154121501), we get a palindrome (259242952).

Subtracting 105121451 from its reverse (154121501), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 105121451 in words is "one hundred five million, one hundred twenty-one thousand, four hundred fifty-one".