111220020120000 has 840 divisors, whose sum is σ = 404900312837328. Its totient is φ = 26914877440000.

The previous prime is 111220020119981. The next prime is 111220020120037. The reversal of 111220020120000 is 21020022111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 8610353542 + ... + 8610366458.

Almost surely, 2^{111220020120000} is an apocalyptic number.

111220020120000 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 111220020120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202450156418664).

111220020120000 is an abundant number, since it is smaller than the sum of its proper divisors (293680292717328).

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

111220020120000 is a wasteful number, since it uses less digits than its factorization.

111220020120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567 (or 13531 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111220020120000 its reverse (21020022111), we get a palindrome (111241040142111).

The spelling of 111220020120000 in words is "one hundred eleven trillion, two hundred twenty billion, twenty million, one hundred twenty thousand".