11221220300 has 72 divisors (see below), whose sum is σ = 25316869200. Its totient is φ = 4313548800.

The previous prime is 11221220201. The next prime is 11221220321. The reversal of 11221220300 is 302212211.

It is a happy number.

It is a super-2 number, since 2×11221220300² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254276 + ... + 295124.

Almost surely, 2^11221220300 is an apocalyptic number.

11221220300 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 11221220300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12658434600).

11221220300 is an abundant number, since it is smaller than the sum of its proper divisors (14095648900).

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

11221220300 is a wasteful number, since it uses less digits than its factorization.

11221220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40971 (or 40964 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 11221220300 its reverse (302212211), we get a palindrome (11523432511).

The spelling of 11221220300 in words is "eleven billion, two hundred twenty-one million, two hundred twenty thousand, three hundred".