10021201221021 has 4 divisors (see below), whose sum is σ = 13361601628032. Its totient is φ = 6680800814012.

The previous prime is 10021201221019. The next prime is 10021201221049. The reversal of 10021201221021 is 12012210212001.

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 10021201221021 - 2¹ = 10021201221019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021201221061) 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, 1670200203501 + ... + 1670200203506.

It is an arithmetic number, because the mean of its divisors is an integer number (3340400407008).

Almost surely, 2^{10021201221021} is an apocalyptic number.

It is an amenable number.

10021201221021 is a deficient number, since it is larger than the sum of its proper divisors (3340400407011).

10021201221021 is an equidigital number, since it uses as much as digits as its factorization.

10021201221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340400407010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10021201221021 its reverse (12012210212001), we get a palindrome (22033411433022).

The spelling of 10021201221021 in words is "ten trillion, twenty-one billion, two hundred one million, two hundred twenty-one thousand, twenty-one".