111200012121000 has 256 divisors, whose sum is σ = 388713717400320. Its totient is φ = 26228995200000.

The previous prime is 111200012120959. The next prime is 111200012121001. The reversal of 111200012121000 is 121210002111.

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

It is not an unprimeable number, because it can be changed into a prime (111200012121001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44315451 + ... + 46757450.

It is an arithmetic number, because the mean of its divisors is an integer number (1518412958595).

Almost surely, 2^{111200012121000} is an apocalyptic number.

111200012121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200012121000 is an abundant number, since it is smaller than the sum of its proper divisors (277513705279320).

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

111200012121000 is a wasteful number, since it uses less digits than its factorization.

111200012121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91072973 (or 91072959 counting only the distinct ones).

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

Adding to 111200012121000 its reverse (121210002111), we get a palindrome (111321222123111).

The spelling of 111200012121000 in words is "one hundred eleven trillion, two hundred billion, twelve million, one hundred twenty-one thousand".