10212200112221 has 4 divisors (see below), whose sum is σ = 10212206929500. Its totient is φ = 10212193294944.

The previous prime is 10212200112181. The next prime is 10212200112239. The reversal of 10212200112221 is 12221100221201.

10212200112221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4080703005625 + 6131497106596 = 2020075^2 + 2476186^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212200112221 - 2¹⁸ = 10212199850077 is a prime.

It is a super-2 number, since 2×10212200112221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10212200112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212200412221) 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, 74696 + ... + 4519953.

It is an arithmetic number, because the mean of its divisors is an integer number (2553051732375).

Almost surely, 2^{10212200112221} is an apocalyptic number.

It is an amenable number.

10212200112221 is a deficient number, since it is larger than the sum of its proper divisors (6817279).

10212200112221 is an equidigital number, since it uses as much as digits as its factorization.

10212200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817278.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10212200112221 its reverse (12221100221201), we get a palindrome (22433300333422).

The spelling of 10212200112221 in words is "ten trillion, two hundred twelve billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".