221222311122 has 16 divisors (see below), whose sum is σ = 442553728032. Its totient is φ = 73722586080.

The previous prime is 221222311117. The next prime is 221222311147. The reversal of 221222311122 is 221113222122.

It is a nude number because it is divisible by every one of its digits.

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, 4519704 + ... + 4568387.

It is an arithmetic number, because the mean of its divisors is an integer number (27659608002).

Almost surely, 2^221222311122 is an apocalyptic number.

221222311122 is an abundant number, since it is smaller than the sum of its proper divisors (221331416910).

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

221222311122 is a wasteful number, since it uses less digits than its factorization.

221222311122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092153.

The product of its digits is 384, while the sum is 21.

Adding to 221222311122 its reverse (221113222122), we get a palindrome (442335533244).

The spelling of 221222311122 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred eleven thousand, one hundred twenty-two".