111111201200 has 60 divisors (see below), whose sum is σ = 266980030488. Its totient is φ = 44438592000.

The previous prime is 111111201167. The next prime is 111111201209. The reversal of 111111201200 is 2102111111.

It is a super-3 number, since 3×111111201200³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111111201209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4227299 + ... + 4253501.

Almost surely, 2^111111201200 is an apocalyptic number.

111111201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111201200 is an abundant number, since it is smaller than the sum of its proper divisors (155868829288).

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

111111201200 is a wasteful number, since it uses less digits than its factorization.

111111201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36822 (or 36811 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111111201200 its reverse (2102111111), we get a palindrome (113213312311).

The spelling of 111111201200 in words is "one hundred eleven billion, one hundred eleven million, two hundred one thousand, two hundred".