11122312021220 has 12 divisors (see below), whose sum is σ = 23356855244604. Its totient is φ = 4448924808480.

The previous prime is 11122312021217. The next prime is 11122312021267. The reversal of 11122312021220 is 2212021322111.

It can be written as a sum of positive squares in 2 ways, for example, as 7295843970724 + 3826468050496 = 2701082^2 + 1956136^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 556115601061 = 11122312021220 / (1 + 1 + 1 + 2 + 2 + 3 + 1 + 2 + 0 + 2 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 11122312021192 and 11122312021201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278057800511 + ... + 278057800550.

It is an arithmetic number, because the mean of its divisors is an integer number (1946404603717).

Almost surely, 2^{11122312021220} is an apocalyptic number.

11122312021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122312021220 is an abundant number, since it is smaller than the sum of its proper divisors (12234543223384).

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

11122312021220 is a wasteful number, since it uses less digits than its factorization.

11122312021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556115601070 (or 556115601068 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11122312021220 its reverse (2212021322111), we get a palindrome (13334333343331).

The spelling of 11122312021220 in words is "eleven trillion, one hundred twenty-two billion, three hundred twelve million, twenty-one thousand, two hundred twenty".