111111220002000 has 160 divisors (see below), whose sum is σ = 367904265191424. Its totient is φ = 28828857024000.

The previous prime is 111111220001857. The next prime is 111111220002001. The reversal of 111111220002000 is 200022111111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111220002001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250028496 + ... + 250472495.

Almost surely, 2^{111111220002000} is an apocalyptic number.

111111220002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111220002000 is an abundant number, since it is smaller than the sum of its proper divisors (256793045189424).

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

111111220002000 is a wasteful number, since it uses less digits than its factorization.

111111220002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500501054 (or 500501038 counting only the distinct ones).

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

Adding to 111111220002000 its reverse (200022111111), we get a palindrome (111311242113111).

The spelling of 111111220002000 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred twenty million, two thousand".