11123222100 has 288 divisors, whose sum is σ = 34269806592. Its totient is φ = 2782080000.

The previous prime is 11123222093. The next prime is 11123222101. The reversal of 11123222100 is 122232111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11123222100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123222101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41044965 + ... + 41045235.

It is an arithmetic number, because the mean of its divisors is an integer number (118992384).

Almost surely, 2^11123222100 is an apocalyptic number.

11123222100 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 11123222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17134903296).

11123222100 is an abundant number, since it is smaller than the sum of its proper divisors (23146584492).

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

11123222100 is a wasteful number, since it uses less digits than its factorization.

11123222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11123222100 its reverse (122232111), we get a palindrome (11245454211).

The spelling of 11123222100 in words is "eleven billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred".