10212211221021 has 40 divisors (see below), whose sum is σ = 15313195462400. Its totient is φ = 6782340612960.

The previous prime is 10212211221013. The next prime is 10212211221041. The reversal of 10212211221021 is 12012211221201.

10212211221021 is a `hidden beast` number, since 1 + 0 + 212 + 211 + 221 + 0 + 21 = 666.

10212211221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10212211221021 - 2³ = 10212211221013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212211220985 and 10212211221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212211221001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23287260 + ... + 23721738.

It is an arithmetic number, because the mean of its divisors is an integer number (382829886560).

Almost surely, 2^{10212211221021} is an apocalyptic number.

It is an amenable number.

10212211221021 is a deficient number, since it is larger than the sum of its proper divisors (5100984241379).

10212211221021 is an equidigital number, since it uses as much as digits as its factorization.

10212211221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435591 (or 435582 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10212211221021 its reverse (12012211221201), we get a palindrome (22224422442222).

The spelling of 10212211221021 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, twenty-one".