221222213332111 has 16 divisors (see below), whose sum is σ = 221751546954336. Its totient is φ = 220693649020416.

The previous prime is 221222213332037. The next prime is 221222213332147. The reversal of 221222213332111 is 111233312222122.

It is a cyclic number.

It is not a de Polignac number, because 221222213332111 - 2⁷ = 221222213331983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221222213332111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222213332411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3042617220 + ... + 3042689926.

It is an arithmetic number, because the mean of its divisors is an integer number (13859471684646).

Almost surely, 2^{221222213332111} is an apocalyptic number.

221222213332111 is a deficient number, since it is larger than the sum of its proper divisors (529333622225).

221222213332111 is an equidigital number, since it uses as much as digits as its factorization.

221222213332111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77898.

The product of its digits is 3456, while the sum is 28.

Adding to 221222213332111 its reverse (111233312222122), we get a palindrome (332455525554233).

The spelling of 221222213332111 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred thirteen million, three hundred thirty-two thousand, one hundred eleven".