111121110222000 has 160 divisors (see below), whose sum is σ = 358552779409344. Its totient is φ = 29607621120000.

The previous prime is 111121110221993. The next prime is 111121110222037. The reversal of 111121110222000 is 222011121111.

It is a happy number.

It is a super-2 number, since 2×111121110222000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504319 + ... + 14916318.

Almost surely, 2^{111121110222000} is an apocalyptic number.

111121110222000 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 111121110222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179276389704672).

111121110222000 is an abundant number, since it is smaller than the sum of its proper divisors (247431669187344).

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

111121110222000 is a wasteful number, since it uses less digits than its factorization.

111121110222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15421864 (or 15421848 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111121110222000 its reverse (222011121111), we get a palindrome (111343121343111).

The spelling of 111121110222000 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand".