111212001120000 has 720 divisors, whose sum is σ = 414394077347712. Its totient is φ = 26231777280000.

The previous prime is 111212001119993. The next prime is 111212001120041. The reversal of 111212001120000 is 21100212111.

It is a super-2 number, since 2×111212001120000² (a number of 29 digits) contains 22 as substring.

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 79 ways as a sum of consecutive naturals, for example, 195075367 + ... + 195644633.

Almost surely, 2^{111212001120000} is an apocalyptic number.

111212001120000 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 111212001120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207197038673856).

111212001120000 is an abundant number, since it is smaller than the sum of its proper divisors (303182076227712).

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

111212001120000 is an equidigital number, since it uses as much as digits as its factorization.

111212001120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569354 (or 569325 counting only the distinct ones).

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

Adding to 111212001120000 its reverse (21100212111), we get a palindrome (111233101332111).

The spelling of 111212001120000 in words is "one hundred eleven trillion, two hundred twelve billion, one million, one hundred twenty thousand".