221212220122223 has 8 divisors (see below), whose sum is σ = 241352240709456. Its totient is φ = 201077169328000.

The previous prime is 221212220122211. The next prime is 221212220122351. The reversal of 221212220122223 is 322221022212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221212220122223 - 2¹⁴ = 221212220105839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221212220122192 and 221212220122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212220122123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242355178 + ... + 1242533223.

It is an arithmetic number, because the mean of its divisors is an integer number (30169030088682).

Almost surely, 2^{221212220122223} is an apocalyptic number.

221212220122223 is a deficient number, since it is larger than the sum of its proper divisors (20140020587233).

221212220122223 is a wasteful number, since it uses less digits than its factorization.

221212220122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484896505.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 221212220122223 its reverse (322221022212122), we get a palindrome (543433242334345).

The spelling of 221212220122223 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-three".