202221222112021 has 4 divisors (see below), whose sum is σ = 231109968128032. Its totient is φ = 173332476096012.

The previous prime is 202221222112009. The next prime is 202221222112061. The reversal of 202221222112021 is 120211222122202.

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 202221222112021 - 2³⁷ = 202083783158549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202221222111983 and 202221222112001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221222112061) 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, 14444373007995 + ... + 14444373008008.

It is an arithmetic number, because the mean of its divisors is an integer number (57777492032008).

Almost surely, 2^{202221222112021} is an apocalyptic number.

It is an amenable number.

202221222112021 is a deficient number, since it is larger than the sum of its proper divisors (28888746016011).

202221222112021 is an equidigital number, since it uses as much as digits as its factorization.

202221222112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28888746016010.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202221222112021 its reverse (120211222122202), we get a palindrome (322432444234223).

The spelling of 202221222112021 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".