1122122121222 has 16 divisors (see below), whose sum is σ = 2341820079360. Its totient is φ = 357778067592.

The previous prime is 1122122121179. The next prime is 1122122121223. The reversal of 1122122121222 is 2221212212211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122122121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4065659722 + ... + 4065659997.

It is an arithmetic number, because the mean of its divisors is an integer number (146363754960).

Almost surely, 2^{1122122121222} is an apocalyptic number.

1122122121222 is an abundant number, since it is smaller than the sum of its proper divisors (1219697958138).

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

1122122121222 is a wasteful number, since it uses less digits than its factorization.

1122122121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131319747.

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

Adding to 1122122121222 its reverse (2221212212211), we get a palindrome (3343334333433).

The spelling of 1122122121222 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".