10011000120221 has 4 divisors (see below), whose sum is σ = 10599882480252. Its totient is φ = 9422117760192.

The previous prime is 10011000120151. The next prime is 10011000120263. The reversal of 10011000120221 is 12202100011001.

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 9126356412196 + 884643708025 = 3020986^2 + 940555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011000120221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011000120721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 294441179990 + ... + 294441180023.

It is an arithmetic number, because the mean of its divisors is an integer number (2649970620063).

Almost surely, 2^{10011000120221} is an apocalyptic number.

It is an amenable number.

10011000120221 is a deficient number, since it is larger than the sum of its proper divisors (588882360031).

10011000120221 is an equidigital number, since it uses as much as digits as its factorization.

10011000120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588882360030.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10011000120221 its reverse (12202100011001), we get a palindrome (22213100131222).

The spelling of 10011000120221 in words is "ten trillion, eleven billion, one hundred twenty thousand, two hundred twenty-one".