10221200202021 has 4 divisors (see below), whose sum is σ = 13628266936032. Its totient is φ = 6814133468012.

The previous prime is 10221200201977. The next prime is 10221200202041. The reversal of 10221200202021 is 12020200212201.

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 10221200202021 - 2¹³ = 10221200193829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221200202041) 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, 1703533367001 + ... + 1703533367006.

It is an arithmetic number, because the mean of its divisors is an integer number (3407066734008).

Almost surely, 2^{10221200202021} is an apocalyptic number.

It is an amenable number.

10221200202021 is a deficient number, since it is larger than the sum of its proper divisors (3407066734011).

10221200202021 is an equidigital number, since it uses as much as digits as its factorization.

10221200202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407066734010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10221200202021 its reverse (12020200212201), we get a palindrome (22241400414222).

The spelling of 10221200202021 in words is "ten trillion, two hundred twenty-one billion, two hundred million, two hundred two thousand, twenty-one".