12142243300 has 144 divisors (see below), whose sum is σ = 29482488000. Its totient is φ = 4303411200.

The previous prime is 12142243297. The next prime is 12142243301. The reversal of 12142243300 is 334224121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (12142243301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7145851 + ... + 7147549.

It is an arithmetic number, because the mean of its divisors is an integer number (204739500).

Almost surely, 2^12142243300 is an apocalyptic number.

12142243300 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 12142243300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14741244000).

12142243300 is an abundant number, since it is smaller than the sum of its proper divisors (17340244700).

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

12142243300 is a wasteful number, since it uses less digits than its factorization.

12142243300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12142243300 its reverse (334224121), we get a palindrome (12476467421).

The spelling of 12142243300 in words is "twelve billion, one hundred forty-two million, two hundred forty-three thousand, three hundred".