10010112122221 has 4 divisors (see below), whose sum is σ = 10015745276572. Its totient is φ = 10004478967872.

The previous prime is 10010112122183. The next prime is 10010112122237. The reversal of 10010112122221 is 12222121101001.

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 6927102899721 + 3083009222500 = 2631939^2 + 1755850^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010112122221 - 2¹⁷ = 10010111991149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010112122195 and 10010112122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010112222221) 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, 2816574510 + ... + 2816578063.

It is an arithmetic number, because the mean of its divisors is an integer number (2503936319143).

Almost surely, 2^{10010112122221} is an apocalyptic number.

It is an amenable number.

10010112122221 is a deficient number, since it is larger than the sum of its proper divisors (5633154351).

10010112122221 is an equidigital number, since it uses as much as digits as its factorization.

10010112122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633154350.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10010112122221 its reverse (12222121101001), we get a palindrome (22232233223222).

The spelling of 10010112122221 in words is "ten trillion, ten billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".