11222111201100 has 144 divisors (see below), whose sum is σ = 34850217755808. Its totient is φ = 2777947176960.

The previous prime is 11222111201071. The next prime is 11222111201101. The reversal of 11222111201100 is 110211122211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11222111201100.

It is not an unprimeable number, because it can be changed into a prime (11222111201101) 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, 14699029 + ... + 15443628.

It is an arithmetic number, because the mean of its divisors is an integer number (242015401082).

Almost surely, 2^{11222111201100} is an apocalyptic number.

11222111201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222111201100 is an abundant number, since it is smaller than the sum of its proper divisors (23628106554708).

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

11222111201100 is a wasteful number, since it uses less digits than its factorization.

11222111201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30142764 (or 30142757 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11222111201100 its reverse (110211122211), we get a palindrome (11332322323311).

The spelling of 11222111201100 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred one thousand, one hundred".