111001222000 has 80 divisors (see below), whose sum is σ = 271058883264. Its totient is φ = 43960800000.

The previous prime is 111001221983. The next prime is 111001222037. The reversal of 111001222000 is 222100111.

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

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72756 + ... + 476755.

Almost surely, 2^111001222000 is an apocalyptic number.

111001222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001222000 is an abundant number, since it is smaller than the sum of its proper divisors (160057661264).

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

111001222000 is a wasteful number, since it uses less digits than its factorization.

111001222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549635 (or 549619 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111001222000 its reverse (222100111), we get a palindrome (111223322111).

The spelling of 111001222000 in words is "one hundred eleven billion, one million, two hundred twenty-two thousand".