12111064800 has 72 divisors (see below), whose sum is σ = 39421523736. Its totient is φ = 3229616640.

The previous prime is 12111064789. The next prime is 12111064811. The reversal of 12111064800 is 846011121.

It is an interprime number because it is at equal distance from previous prime (12111064789) and next prime (12111064811).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2520739 + ... + 2525538.

It is an arithmetic number, because the mean of its divisors is an integer number (547521163).

Almost surely, 2^12111064800 is an apocalyptic number.

12111064800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111064800 is an abundant number, since it is smaller than the sum of its proper divisors (27310458936).

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

12111064800 is a wasteful number, since it uses less digits than its factorization.

12111064800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046300 (or 5046287 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 12111064800 its reverse (846011121), we get a palindrome (12957075921).

The spelling of 12111064800 in words is "twelve billion, one hundred eleven million, sixty-four thousand, eight hundred".