10021211200505 has 8 divisors (see below), whose sum is σ = 12025580869512. Its totient is φ = 8016884007808.

The previous prime is 10021211200499. The next prime is 10021211200513. The reversal of 10021211200505 is 50500211212001.

It can be written as a sum of positive squares in 4 ways, for example, as 483225180736 + 9537986019769 = 695144^2 + 3088363^2 .

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 10021211200505 - 2²² = 10021207006201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10097714 + ... + 11045643.

It is an arithmetic number, because the mean of its divisors is an integer number (1503197608689).

Almost surely, 2^{10021211200505} is an apocalyptic number.

It is an amenable number.

10021211200505 is a deficient number, since it is larger than the sum of its proper divisors (2004369669007).

10021211200505 is an equidigital number, since it uses as much as digits as its factorization.

10021211200505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21238155.

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

Adding to 10021211200505 its reverse (50500211212001), we get a palindrome (60521422412506).

The spelling of 10021211200505 in words is "ten trillion, twenty-one billion, two hundred eleven million, two hundred thousand, five hundred five".