10012020110221 has 4 divisors (see below), whose sum is σ = 10012027797244. Its totient is φ = 10012012423200.

The previous prime is 10012020110201. The next prime is 10012020110291. The reversal of 10012020110221 is 12201102021001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1440446434596 + 8571573675625 = 1200186^2 + 2927725^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012020110221 - 2²⁷ = 10011885892493 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 (10012020110201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1351050 + ... + 4674331.

It is an arithmetic number, because the mean of its divisors is an integer number (2503006949311).

Almost surely, 2^{10012020110221} is an apocalyptic number.

It is an amenable number.

10012020110221 is a deficient number, since it is larger than the sum of its proper divisors (7687023).

10012020110221 is an equidigital number, since it uses as much as digits as its factorization.

10012020110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7687022.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10012020110221 its reverse (12201102021001), we get a palindrome (22213122131222).

The spelling of 10012020110221 in words is "ten trillion, twelve billion, twenty million, one hundred ten thousand, two hundred twenty-one".