104412121505 has 4 divisors (see below), whose sum is σ = 125294545812. Its totient is φ = 83529697200.

The previous prime is 104412121487. The next prime is 104412121529. The reversal of 104412121505 is 505121214401.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58355098624 + 46057022881 = 241568^2 + 214609^2 .

It is not a de Polignac number, because 104412121505 - 2¹⁰ = 104412120481 is a prime.

It is a super-2 number, since 2×104412121505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10441212146 + ... + 10441212155.

It is an arithmetic number, because the mean of its divisors is an integer number (31323636453).

Almost surely, 2^104412121505 is an apocalyptic number.

It is an amenable number.

104412121505 is a deficient number, since it is larger than the sum of its proper divisors (20882424307).

104412121505 is an equidigital number, since it uses as much as digits as its factorization.

104412121505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20882424306.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 104412121505 its reverse (505121214401), we get a palindrome (609533335906).

The spelling of 104412121505 in words is "one hundred four billion, four hundred twelve million, one hundred twenty-one thousand, five hundred five".