11201212111100 has 72 divisors (see below), whose sum is σ = 26527924270848. Its totient is φ = 4071386116800.

The previous prime is 11201212111069. The next prime is 11201212111121. The reversal of 11201212111100 is 111121210211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289439 + ... + 4741961.

Almost surely, 2^{11201212111100} is an apocalyptic number.

11201212111100 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 11201212111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13263962135424).

11201212111100 is an abundant number, since it is smaller than the sum of its proper divisors (15326712159748).

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

11201212111100 is a wasteful number, since it uses less digits than its factorization.

11201212111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454835 (or 4454828 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11201212111100 its reverse (111121210211), we get a palindrome (11312333321311).

The spelling of 11201212111100 in words is "eleven trillion, two hundred one billion, two hundred twelve million, one hundred eleven thousand, one hundred".