2221221222122 has 8 divisors (see below), whose sum is σ = 3807807809376. Its totient is φ = 951951952332.

The previous prime is 2221221222107. The next prime is 2221221222133. The reversal of 2221221222122 is 2212221221222.

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

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 3 ways as a sum of consecutive naturals, for example, 79329329348 + ... + 79329329375.

It is an arithmetic number, because the mean of its divisors is an integer number (475975976172).

Almost surely, 2^{2221221222122} is an apocalyptic number.

2221221222122 is a deficient number, since it is larger than the sum of its proper divisors (1586586587254).

2221221222122 is a wasteful number, since it uses less digits than its factorization.

2221221222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158658658732.

The product of its digits is 1024, while the sum is 23.

Adding to 2221221222122 its reverse (2212221221222), we get a palindrome (4433442443344).

The spelling of 2221221222122 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".