1100021202 has 64 divisors (see below), whose sum is σ = 2801260800. Its totient is φ = 313441920.

The previous prime is 1100021191. The next prime is 1100021203. The reversal of 1100021202 is 2021200011.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1100021203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143302 + ... + 150782.

It is an arithmetic number, because the mean of its divisors is an integer number (43769700).

Almost surely, 2^1100021202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100021202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400630400).

1100021202 is an abundant number, since it is smaller than the sum of its proper divisors (1701239598).

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

1100021202 is a wasteful number, since it uses less digits than its factorization.

1100021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888 (or 7882 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1100021202 is about 33166.5675341902. The cubic root of 1100021202 is about 1032.2867476571.

Adding to 1100021202 its reverse (2021200011), we get a palindrome (3121221213).

The spelling of 1100021202 in words is "one billion, one hundred million, twenty-one thousand, two hundred two".