1101233220 has 48 divisors (see below), whose sum is σ = 3166795968. Its totient is φ = 285724800.

The previous prime is 1101233209. The next prime is 1101233267. The reversal of 1101233220 is 223321011.

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 1101233220.

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 15 ways as a sum of consecutive naturals, for example, 245806 + ... + 250245.

It is an arithmetic number, because the mean of its divisors is an integer number (65974916).

Almost surely, 2^1101233220 is an apocalyptic number.

1101233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101233220 is an abundant number, since it is smaller than the sum of its proper divisors (2065562748).

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

1101233220 is a wasteful number, since it uses less digits than its factorization.

1101233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496100 (or 496098 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1101233220 is about 33184.8341867185. The cubic root of 1101233220 is about 1032.6657375914.

Adding to 1101233220 its reverse (223321011), we get a palindrome (1324554231).

The spelling of 1101233220 in words is "one billion, one hundred one million, two hundred thirty-three thousand, two hundred twenty".