2221212211122 has 32 divisors (see below), whose sum is σ = 4455962259840. Its totient is φ = 738149575680.

The previous prime is 2221212211121. The next prime is 2221212211189. The reversal of 2221212211122 is 2211122121222.

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 (2221212211121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4706547 + ... + 5156937.

It is an arithmetic number, because the mean of its divisors is an integer number (139248820620).

Almost surely, 2^{2221212211122} is an apocalyptic number.

2221212211122 is an abundant number, since it is smaller than the sum of its proper divisors (2234750048718).

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

2221212211122 is a wasteful number, since it uses less digits than its factorization.

2221212211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452898.

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

Adding to 2221212211122 its reverse (2211122121222), we get a palindrome (4432334332344).

The spelling of 2221212211122 in words is "two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty-two".