111121200012 has 48 divisors (see below), whose sum is σ = 266370272000. Its totient is φ = 36028504512.

The previous prime is 111121199977. The next prime is 111121200041. The reversal of 111121200012 is 210002121111.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1517793 + ... + 1589319.

Almost surely, 2^111121200012 is an apocalyptic number.

111121200012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111121200012 is an abundant number, since it is smaller than the sum of its proper divisors (155249071988).

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

111121200012 is a wasteful number, since it uses less digits than its factorization.

111121200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75070 (or 75068 counting only the distinct ones).

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

Adding to 111121200012 its reverse (210002121111), we get a palindrome (321123321123).

The spelling of 111121200012 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thousand, twelve".