111222110002000 has 80 divisors (see below), whose sum is σ = 268940953833552. Its totient is φ = 44487869337600.

The previous prime is 111222110001973. The next prime is 111222110002009. The reversal of 111222110002000 is 200011222111.

It can be written as a sum of positive squares in 8 ways, for example, as 10702476703296 + 100519633298704 = 3271464^2 + 10025948^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222110002009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94408584 + ... + 95579416.

Almost surely, 2^{111222110002000} is an apocalyptic number.

111222110002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222110002000 is an abundant number, since it is smaller than the sum of its proper divisors (157718843831552).

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

111222110002000 is a wasteful number, since it uses less digits than its factorization.

111222110002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218353 (or 1218337 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111222110002000 its reverse (200011222111), we get a palindrome (111422121224111).

The spelling of 111222110002000 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, two thousand".