12132223400 has 96 divisors (see below), whose sum is σ = 32581932480. Its totient is φ = 4152192000.

The previous prime is 12132223391. The next prime is 12132223403. The reversal of 12132223400 is 432223121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12132223403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124796 + ... + 199595.

It is an arithmetic number, because the mean of its divisors is an integer number (339395130).

Almost surely, 2^12132223400 is an apocalyptic number.

12132223400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132223400 is an abundant number, since it is smaller than the sum of its proper divisors (20449709080).

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

12132223400 is a wasteful number, since it uses less digits than its factorization.

12132223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324435 (or 324426 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12132223400 its reverse (432223121), we get a palindrome (12564446521).

It can be divided in two parts, 12132 and 223400, that added together give a palindrome (235532).

The spelling of 12132223400 in words is "twelve billion, one hundred thirty-two million, two hundred twenty-three thousand, four hundred".