11022222120 has 128 divisors (see below), whose sum is σ = 40697475840. Its totient is φ = 2325565440.

The previous prime is 11022222109. The next prime is 11022222137. The reversal of 11022222120 is 2122222011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11022222120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493761 + ... + 515600.

It is an arithmetic number, because the mean of its divisors is an integer number (317949030).

Almost surely, 2^11022222120 is an apocalyptic number.

11022222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11022222120 is an abundant number, since it is smaller than the sum of its proper divisors (29675253720).

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

11022222120 is a wasteful number, since it uses less digits than its factorization.

11022222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009395 (or 1009391 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11022222120 its reverse (2122222011), we get a palindrome (13144444131).

It can be divided in two parts, 1102 and 2222120, that added together give a palindrome (2223222).

The spelling of 11022222120 in words is "eleven billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty".