1102002220 has 144 divisors (see below), whose sum is σ = 2799383328. Its totient is φ = 360110080.

The previous prime is 1102002193. The next prime is 1102002227. The reversal of 1102002220 is 222002011.

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 = 1102002197 and 1102002206.

It is not an unprimeable number, because it can be changed into a prime (1102002227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1978182 + ... + 1978738.

It is an arithmetic number, because the mean of its divisors is an integer number (19440162).

Almost surely, 2^1102002220 is an apocalyptic number.

1102002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399691664).

1102002220 is an abundant number, since it is smaller than the sum of its proper divisors (1697381108).

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

1102002220 is a wasteful number, since it uses less digits than its factorization.

1102002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1102002220 is about 33196.4187827543. The cubic root of 1102002220 is about 1032.9060545871.

Adding to 1102002220 its reverse (222002011), we get a palindrome (1324004231).

The spelling of 1102002220 in words is "one billion, one hundred two million, two thousand, two hundred twenty".