11220010500 has 96 divisors (see below), whose sum is σ = 32908337280. Its totient is φ = 2970422400.

The previous prime is 11220010463. The next prime is 11220010537. The reversal of 11220010500 is 501002211.

It is an interprime number because it is at equal distance from previous prime (11220010463) and next prime (11220010537).

It is a super-2 number, since 2×11220010500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181594 + ... + 235406.

It is an arithmetic number, because the mean of its divisors is an integer number (342795180).

Almost surely, 2^11220010500 is an apocalyptic number.

11220010500 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 11220010500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16454168640).

11220010500 is an abundant number, since it is smaller than the sum of its proper divisors (21688326780).

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

11220010500 is a wasteful number, since it uses less digits than its factorization.

11220010500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53974 (or 53962 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

Adding to 11220010500 its reverse (501002211), we get a palindrome (11721012711).

The spelling of 11220010500 in words is "eleven billion, two hundred twenty million, ten thousand, five hundred".