1101032220 has 48 divisors (see below), whose sum is σ = 3086364960. Its totient is φ = 293277696.

The previous prime is 1101032203. The next prime is 1101032221. The reversal of 1101032220 is 222301011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1101032196 and 1101032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101032221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45864 + ... + 65616.

It is an arithmetic number, because the mean of its divisors is an integer number (64299270).

Almost surely, 2^1101032220 is an apocalyptic number.

1101032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101032220 is an abundant number, since it is smaller than the sum of its proper divisors (1985332740).

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

1101032220 is a wasteful number, since it uses less digits than its factorization.

1101032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20694 (or 20692 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1101032220 is about 33181.8055566601. The cubic root of 1101032220 is about 1032.6029054745.

Adding to 1101032220 its reverse (222301011), we get a palindrome (1323333231).

The spelling of 1101032220 in words is "one billion, one hundred one million, thirty-two thousand, two hundred twenty".