222000220122221 has 4 divisors (see below), whose sum is σ = 222000436495200. Its totient is φ = 222000003749244.

The previous prime is 222000220122217. The next prime is 222000220122229. The reversal of 222000220122221 is 122221022000222.

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 222000220122221 - 2² = 222000220122217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222000220122193 and 222000220122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000220122229) 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, 106640111 + ... + 108701948.

It is an arithmetic number, because the mean of its divisors is an integer number (55500109123800).

Almost surely, 2^{222000220122221} is an apocalyptic number.

It is an amenable number.

222000220122221 is a deficient number, since it is larger than the sum of its proper divisors (216372979).

222000220122221 is a wasteful number, since it uses less digits than its factorization.

222000220122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216372978.

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

Adding to 222000220122221 its reverse (122221022000222), we get a palindrome (344221242122443).

The spelling of 222000220122221 in words is "two hundred twenty-two trillion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-one".