1101120220 has 24 divisors (see below), whose sum is σ = 2313040464. Its totient is φ = 440317056.

The previous prime is 1101120199. The next prime is 1101120233. The reversal of 1101120220 is 220211011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1101120197 and 1101120206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88632 + ... + 100288.

It is an arithmetic number, because the mean of its divisors is an integer number (96376686).

Almost surely, 2^1101120220 is an apocalyptic number.

1101120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101120220 is an abundant number, since it is smaller than the sum of its proper divisors (1211920244).

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

1101120220 is a wasteful number, since it uses less digits than its factorization.

1101120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16389 (or 16387 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1101120220 is about 33183.1315580673. The cubic root of 1101120220 is about 1032.6304150040.

Adding to 1101120220 its reverse (220211011), we get a palindrome (1321331231).

The spelling of 1101120220 in words is "one billion, one hundred one million, one hundred twenty thousand, two hundred twenty".