11112212100000 has 576 divisors, whose sum is σ = 40140322104960. Its totient is φ = 2669068800000.

The previous prime is 11112212099993. The next prime is 11112212100089. The reversal of 11112212100000 is 121221111.

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 95 ways as a sum of consecutive naturals, for example, 359684554 + ... + 359715446.

It is an arithmetic number, because the mean of its divisors is an integer number (69688059210).

Almost surely, 2^{11112212100000} is an apocalyptic number.

11112212100000 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 11112212100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20070161052480).

11112212100000 is an abundant number, since it is smaller than the sum of its proper divisors (29028110004960).

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

11112212100000 is a wasteful number, since it uses less digits than its factorization.

11112212100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31051 (or 31023 counting only the distinct ones).

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

Adding to 11112212100000 its reverse (121221111), we get a palindrome (11112333321111).

The spelling of 11112212100000 in words is "eleven trillion, one hundred twelve billion, two hundred twelve million, one hundred thousand".