222000211221 has 8 divisors (see below), whose sum is σ = 297125759040. Its totient is φ = 147437402112.

The previous prime is 222000211211. The next prime is 222000211241. The reversal of 222000211221 is 122112000222.

222000211221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 222000211221 - 2⁶ = 222000211157 is a prime.

It is a super-2 number, since 2×222000211221² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222000211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000211211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140683756 + ... + 140685333.

It is an arithmetic number, because the mean of its divisors is an integer number (37140719880).

Almost surely, 2^222000211221 is an apocalyptic number.

It is an amenable number.

222000211221 is a deficient number, since it is larger than the sum of its proper divisors (75125547819).

222000211221 is a wasteful number, since it uses less digits than its factorization.

222000211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281369355.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222000211221 its reverse (122112000222), we get a palindrome (344112211443).

The spelling of 222000211221 in words is "two hundred twenty-two billion, two hundred eleven thousand, two hundred twenty-one".