11220122100 has 144 divisors (see below), whose sum is σ = 35740837440. Its totient is φ = 2694988800.

The previous prime is 11220122087. The next prime is 11220122143. The reversal of 11220122100 is 122102211.

It is a super-2 number, since 2×11220122100² (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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 344104 + ... + 375296.

It is an arithmetic number, because the mean of its divisors is an integer number (248200260).

Almost surely, 2^11220122100 is an apocalyptic number.

11220122100 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 11220122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17870418720).

11220122100 is an abundant number, since it is smaller than the sum of its proper divisors (24520715340).

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

11220122100 is a wasteful number, since it uses less digits than its factorization.

11220122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31330 (or 31323 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11220122100 its reverse (122102211), we get a palindrome (11342224311).

The spelling of 11220122100 in words is "eleven billion, two hundred twenty million, one hundred twenty-two thousand, one hundred".