202222021331221 has 4 divisors (see below), whose sum is σ = 202222347726112. Its totient is φ = 202221694936332.

The previous prime is 202222021331123. The next prime is 202222021331273. The reversal of 202222021331221 is 122133120222202.

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 202222021331221 - 2¹¹ = 202222021329173 is a prime.

It is a super-2 number, since 2×202222021331221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202222021335221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162266331 + ... + 163507816.

It is an arithmetic number, because the mean of its divisors is an integer number (50555586931528).

Almost surely, 2^{202222021331221} is an apocalyptic number.

It is an amenable number.

202222021331221 is a deficient number, since it is larger than the sum of its proper divisors (326394891).

202222021331221 is an equidigital number, since it uses as much as digits as its factorization.

202222021331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326394890.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 202222021331221 its reverse (122133120222202), we get a palindrome (324355141553423).

The spelling of 202222021331221 in words is "two hundred two trillion, two hundred twenty-two billion, twenty-one million, three hundred thirty-one thousand, two hundred twenty-one".