1122212112220 has 24 divisors (see below), whose sum is σ = 2480679406800. Its totient is φ = 425259326592.

The previous prime is 1122212112191. The next prime is 1122212112283. The reversal of 1122212112220 is 222112122211.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 7 ways as a sum of consecutive naturals, for example, 1476594505 + ... + 1476595264.

It is an arithmetic number, because the mean of its divisors is an integer number (103361641950).

Almost surely, 2^{1122212112220} is an apocalyptic number.

1122212112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122212112220 is an abundant number, since it is smaller than the sum of its proper divisors (1358467294580).

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

1122212112220 is a wasteful number, since it uses less digits than its factorization.

1122212112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953189797 (or 2953189795 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1122212112220 its reverse (222112122211), we get a palindrome (1344324234431).

Subtracting from 1122212112220 its reverse (222112122211), we obtain a palindrome (900099990009).

The spelling of 1122212112220 in words is "one trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty".