1011421513105 has 8 divisors (see below), whose sum is σ = 1214647410600. Its totient is φ = 808509480576.

The previous prime is 1011421513027. The next prime is 1011421513117. The reversal of 1011421513105 is 5013151241101.

It can be written as a sum of positive squares in 4 ways, for example, as 239082859521 + 772338653584 = 488961^2 + 878828^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011421513105 - 2⁷ = 1011421512977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011421513105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78459150 + ... + 78472039.

It is an arithmetic number, because the mean of its divisors is an integer number (151830926325).

Almost surely, 2^{1011421513105} is an apocalyptic number.

It is an amenable number.

1011421513105 is a deficient number, since it is larger than the sum of its proper divisors (203225897495).

1011421513105 is a wasteful number, since it uses less digits than its factorization.

1011421513105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156932483.

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

Adding to 1011421513105 its reverse (5013151241101), we get a palindrome (6024572754206).

The spelling of 1011421513105 in words is "one trillion, eleven billion, four hundred twenty-one million, five hundred thirteen thousand, one hundred five".