12200203312 has 20 divisors (see below), whose sum is σ = 25786793736. Its totient is φ = 5545546880.

The previous prime is 12200203307. The next prime is 12200203321. The reversal of 12200203312 is 21330200221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34659493 + ... + 34659844.

Almost surely, 2^12200203312 is an apocalyptic number.

It is an amenable number.

12200203312 is an abundant number, since it is smaller than the sum of its proper divisors (13586590424).

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

12200203312 is a wasteful number, since it uses less digits than its factorization.

12200203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69319356 (or 69319350 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12200203312 its reverse (21330200221), we get a palindrome (33530403533).

It can be divided in two parts, 12200 and 203312, that added together give a palindrome (215512).

The spelling of 12200203312 in words is "twelve billion, two hundred million, two hundred three thousand, three hundred twelve".