11201212110 has 128 divisors (see below), whose sum is σ = 31191091200. Its totient is φ = 2544261120.

The previous prime is 11201212109. The next prime is 11201212111. The reversal of 11201212110 is 1121210211.

It is an interprime number because it is at equal distance from previous prime (11201212109) and next prime (11201212111).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201212111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1280331 + ... + 1289049.

It is an arithmetic number, because the mean of its divisors is an integer number (243680400).

Almost surely, 2^11201212110 is an apocalyptic number.

11201212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11201212110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15595545600).

11201212110 is an abundant number, since it is smaller than the sum of its proper divisors (19989879090).

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

11201212110 is a wasteful number, since it uses less digits than its factorization.

11201212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8986.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11201212110 its reverse (1121210211), we get a palindrome (12322422321).

The spelling of 11201212110 in words is "eleven billion, two hundred one million, two hundred twelve thousand, one hundred ten".