1111212120200 has 384 divisors, whose sum is σ = 3235105440000. Its totient is φ = 345613824000.

The previous prime is 1111212120197. The next prime is 1111212120209. The reversal of 1111212120200 is 20212121111.

It is a super-3 number, since 3×1111212120200³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1111212120209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 255507626 + ... + 255511974.

It is an arithmetic number, because the mean of its divisors is an integer number (8424753750).

Almost surely, 2^{1111212120200} is an apocalyptic number.

1111212120200 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 1111212120200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617552720000).

1111212120200 is an abundant number, since it is smaller than the sum of its proper divisors (2123893319800).

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

1111212120200 is a wasteful number, since it uses less digits than its factorization.

1111212120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625 (or 4616 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1111212120200 its reverse (20212121111), we get a palindrome (1131424241311).

The spelling of 1111212120200 in words is "one trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred".