2221221121122 has 64 divisors (see below), whose sum is σ = 4602546489600. Its totient is φ = 714204691200.

The previous prime is 2221221121051. The next prime is 2221221121123. The reversal of 2221221121122 is 2211211221222.

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

It is not an unprimeable number, because it can be changed into a prime (2221221121123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44804004 + ... + 44853552.

It is an arithmetic number, because the mean of its divisors is an integer number (71914788900).

Almost surely, 2^{2221221121122} is an apocalyptic number.

2221221121122 is an abundant number, since it is smaller than the sum of its proper divisors (2381325368478).

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

2221221121122 is a wasteful number, since it uses less digits than its factorization.

2221221121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51979.

The product of its digits is 256, while the sum is 21.

Adding to 2221221121122 its reverse (2211211221222), we get a palindrome (4432432342344).

The spelling of 2221221121122 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".