10221222122021 has 12 divisors (see below), whose sum is σ = 10933431979008. Its totient is φ = 9549453204984.

The previous prime is 10221222122003. The next prime is 10221222122117. The reversal of 10221222122021 is 12022122212201.

It is a de Polignac number, because none of the positive numbers 2^k-10221222122021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221222121984 and 10221222122002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221222122521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224649125 + ... + 224694618.

It is an arithmetic number, because the mean of its divisors is an integer number (911119331584).

Almost surely, 2^{10221222122021} is an apocalyptic number.

It is an amenable number.

10221222122021 is a deficient number, since it is larger than the sum of its proper divisors (712209856987).

10221222122021 is an equidigital number, since it uses as much as digits as its factorization.

10221222122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449343832 (or 449343809 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 10221222122021 its reverse (12022122212201), we get a palindrome (22243344334222).

The spelling of 10221222122021 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty-one".