111220121110000 has 600 divisors, whose sum is σ = 324285589393920. Its totient is φ = 36789758208000.

The previous prime is 111220121109991. The next prime is 111220121110001. The reversal of 111220121110000 is 11121022111.

It is a happy number.

It is a super-3 number, since 3×111220121110000³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220121110001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 28036328017 + ... + 28036331983.

Almost surely, 2^{111220121110000} is an apocalyptic number.

111220121110000 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 111220121110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162142794696960).

111220121110000 is an abundant number, since it is smaller than the sum of its proper divisors (213065468283920).

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

111220121110000 is a wasteful number, since it uses less digits than its factorization.

111220121110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011 (or 5983 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111220121110000 its reverse (11121022111), we get a palindrome (111231242132111).

The spelling of 111220121110000 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty-one million, one hundred ten thousand".