221111211120222 has 16 divisors (see below), whose sum is σ = 442222680436992. Its totient is φ = 73703694007320.

The previous prime is 221111211120203. The next prime is 221111211120311. The reversal of 221111211120222 is 222021112111122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1438197 + ... + 21078207.

It is an arithmetic number, because the mean of its divisors is an integer number (27638917527312).

Almost surely, 2^{221111211120222} is an apocalyptic number.

221111211120222 is an abundant number, since it is smaller than the sum of its proper divisors (221111469316770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221111211120222 is a wasteful number, since it uses less digits than its factorization.

221111211120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21516383.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221111211120222 its reverse (222021112111122), we get a palindrome (443132323231344).

The spelling of 221111211120222 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty thousand, two hundred twenty-two".