10212010112221 has 4 divisors (see below), whose sum is σ = 10240455823200. Its totient is φ = 10183564401244.

The previous prime is 10212010112219. The next prime is 10212010112267. The reversal of 10212010112221 is 12221101021201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10212010112221 - 2¹ = 10212010112219 is a prime.

It is a super-2 number, since 2×10212010112221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212010112195 and 10212010112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212010112021) 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, 14222854951 + ... + 14222855668.

It is an arithmetic number, because the mean of its divisors is an integer number (2560113955800).

Almost surely, 2^{10212010112221} is an apocalyptic number.

It is an amenable number.

10212010112221 is a deficient number, since it is larger than the sum of its proper divisors (28445710979).

10212010112221 is an equidigital number, since it uses as much as digits as its factorization.

10212010112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28445710978.

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

Adding to 10212010112221 its reverse (12221101021201), we get a palindrome (22433111133422).

The spelling of 10212010112221 in words is "ten trillion, two hundred twelve billion, ten million, one hundred twelve thousand, two hundred twenty-one".