222102020220221 has 4 divisors (see below), whose sum is σ = 222366742533600. Its totient is φ = 221837297906844.

The previous prime is 222102020220163. The next prime is 222102020220257. The reversal of 222102020220221 is 122022020201222.

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 222102020220221 - 2²² = 222102016025917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222102020220193 and 222102020220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102020120221) 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 3 ways as a sum of consecutive naturals, for example, 132361155431 + ... + 132361157108.

It is an arithmetic number, because the mean of its divisors is an integer number (55591685633400).

Almost surely, 2^{222102020220221} is an apocalyptic number.

It is an amenable number.

222102020220221 is a deficient number, since it is larger than the sum of its proper divisors (264722313379).

222102020220221 is an equidigital number, since it uses as much as digits as its factorization.

222102020220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264722313378.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222102020220221 its reverse (122022020201222), we get a palindrome (344124040421443).

The spelling of 222102020220221 in words is "two hundred twenty-two trillion, one hundred two billion, twenty million, two hundred twenty thousand, two hundred twenty-one".