11221213110 has 64 divisors (see below), whose sum is σ = 27677244672. Its totient is φ = 2909506176.

The previous prime is 11221213109. The next prime is 11221213117. The reversal of 11221213110 is 1131212211.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221213110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221213117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2487477 + ... + 2491983.

It is an arithmetic number, because the mean of its divisors is an integer number (432456948).

Almost surely, 2^11221213110 is an apocalyptic number.

11221213110 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 11221213110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13838622336).

11221213110 is an abundant number, since it is smaller than the sum of its proper divisors (16456031562).

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

11221213110 is a wasteful number, since it uses less digits than its factorization.

11221213110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6797.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11221213110 its reverse (1131212211), we get a palindrome (12352425321).

The spelling of 11221213110 in words is "eleven billion, two hundred twenty-one million, two hundred thirteen thousand, one hundred ten".