1100213220 has 48 divisors (see below), whose sum is σ = 3138730560. Its totient is φ = 287853696.

The previous prime is 1100213159. The next prime is 1100213227. The reversal of 1100213220 is 223120011.

1100213220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 = 1100213196 and 1100213205.

It is not an unprimeable number, because it can be changed into a prime (1100213227) 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, 169810 + ... + 176169.

It is an arithmetic number, because the mean of its divisors is an integer number (65390220).

Almost surely, 2^1100213220 is an apocalyptic number.

1100213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100213220 is an abundant number, since it is smaller than the sum of its proper divisors (2038517340).

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

1100213220 is a wasteful number, since it uses less digits than its factorization.

1100213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346044 (or 346042 counting only the distinct ones).

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

The square root of 1100213220 is about 33169.4621602461. The cubic root of 1100213220 is about 1032.3468089553.

Adding to 1100213220 its reverse (223120011), we get a palindrome (1323333231).

The spelling of 1100213220 in words is "one billion, one hundred million, two hundred thirteen thousand, two hundred twenty".