221232120000222 has 32 divisors (see below), whose sum is σ = 445843610999424. Its totient is φ = 73180815999200.

The previous prime is 221232120000149. The next prime is 221232120000233. The reversal of 221232120000222 is 222000021232122.

It is a super-2 number, since 2×221232120000222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295138888 + ... + 295887524.

It is an arithmetic number, because the mean of its divisors is an integer number (13932612843732).

Almost surely, 2^{221232120000222} is an apocalyptic number.

221232120000222 is an abundant number, since it is smaller than the sum of its proper divisors (224611490999202).

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

221232120000222 is a wasteful number, since it uses less digits than its factorization.

221232120000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124744.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221232120000222 its reverse (222000021232122), we get a palindrome (443232141232344).

The spelling of 221232120000222 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, one hundred twenty million, two hundred twenty-two", and thus it is an aban number.