111211222122000 has 2880 divisors, whose sum is σ = 545202537804288. Its totient is φ = 20753832960000.

The previous prime is 111211222121959. The next prime is 111211222122001. The reversal of 111211222122000 is 221222112111.

111211222122000 is a `hidden beast` number, since 1 + 11 + 211 + 2 + 221 + 220 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111211222122001) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 4666650085 + ... + 4666673915.

Almost surely, 2^{111211222122000} is an apocalyptic number.

111211222122000 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 111211222122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272601268902144).

111211222122000 is an abundant number, since it is smaller than the sum of its proper divisors (433991315682288).

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

111211222122000 is a wasteful number, since it uses less digits than its factorization.

111211222122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23935 (or 23909 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111211222122000 its reverse (221222112111), we get a palindrome (111432444234111).

The spelling of 111211222122000 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand".