1122122012220 has 72 divisors (see below), whose sum is σ = 3713203756080. Its totient is φ = 272029578240.

The previous prime is 1122122012189. The next prime is 1122122012243. The reversal of 1122122012220 is 222102212211.

It is a happy number.

1122122012220 is a `hidden beast` number, since 1 + 1 + 221 + 220 + 1 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1122122012193 and 1122122012202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283362165 + ... + 283366124.

It is an arithmetic number, because the mean of its divisors is an integer number (51572274390).

Almost surely, 2^{1122122012220} is an apocalyptic number.

1122122012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122122012220 is an abundant number, since it is smaller than the sum of its proper divisors (2591081743860).

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

1122122012220 is a wasteful number, since it uses less digits than its factorization.

1122122012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566728315 (or 566728310 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1122122012220 its reverse (222102212211), we get a palindrome (1344224224431).

The spelling of 1122122012220 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, twelve thousand, two hundred twenty".