11021020200 has 144 divisors (see below), whose sum is σ = 37052343900. Its totient is φ = 2935756800.

The previous prime is 11021020169. The next prime is 11021020201. The reversal of 11021020200 is 202012011.

It can be written as a sum of positive squares in 6 ways, for example, as 441252036 + 10579768164 = 21006^2 + 102858^2 .

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 (11021020201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1993440 + ... + 1998960.

Almost surely, 2^11021020200 is an apocalyptic number.

11021020200 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 11021020200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18526171950).

11021020200 is an abundant number, since it is smaller than the sum of its proper divisors (26031323700).

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

11021020200 is a wasteful number, since it uses less digits than its factorization.

11021020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652 (or 6640 counting only the distinct ones).

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

Adding to 11021020200 its reverse (202012011), we get a palindrome (11223032211).

The spelling of 11021020200 in words is "eleven billion, twenty-one million, twenty thousand, two hundred".