11221220221100 has 36 divisors (see below), whose sum is σ = 24350194612800. Its totient is φ = 4488461040960.

The previous prime is 11221220221051. The next prime is 11221220221103. The reversal of 11221220221100 is 112202212211.

It is not an unprimeable number, because it can be changed into a prime (11221220221103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29039966 + ... + 29423834.

It is an arithmetic number, because the mean of its divisors is an integer number (676394294800).

Almost surely, 2^{11221220221100} is an apocalyptic number.

11221220221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221220221100 is an abundant number, since it is smaller than the sum of its proper divisors (13128974391700).

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

11221220221100 is a wasteful number, since it uses less digits than its factorization.

11221220221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676202 (or 676195 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11221220221100 its reverse (112202212211), we get a palindrome (11333422433311).

The spelling of 11221220221100 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred".