11221222222120 has 32 divisors (see below), whose sum is σ = 25497727731720. Its totient is φ = 4444048403200.

The previous prime is 11221222222069. The next prime is 11221222222129. The reversal of 11221222222120 is 2122222212211.

It can be written as a sum of positive squares in 4 ways, for example, as 8587138665924 + 2634083556196 = 2930382^2 + 1622986^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11221222222091 and 11221222222100.

It is not an unprimeable number, because it can be changed into a prime (11221222222129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388761087 + ... + 1388769166.

Almost surely, 2^{11221222222120} is an apocalyptic number.

11221222222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221222222120 is an abundant number, since it is smaller than the sum of its proper divisors (14276505509600).

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

11221222222120 is a wasteful number, since it uses less digits than its factorization.

11221222222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777530365 (or 2777530361 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 11221222222120 its reverse (2122222212211), we get a palindrome (13343444434331).

Subtracting from 11221222222120 its reverse (2122222212211), we obtain a palindrome (9099000009909).

The spelling of 11221222222120 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty".