12400221134 has 8 divisors (see below), whose sum is σ = 21257521968. Its totient is φ = 5314380480.

The previous prime is 12400221133. The next prime is 12400221143. The reversal of 12400221134 is 43112200421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400221133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442865027 + ... + 442865054.

It is an arithmetic number, because the mean of its divisors is an integer number (2657190246).

Almost surely, 2^12400221134 is an apocalyptic number.

12400221134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12400221134 is a deficient number, since it is larger than the sum of its proper divisors (8857300834).

12400221134 is an equidigital number, since it uses as much as digits as its factorization.

12400221134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885730090.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12400221134 its reverse (43112200421), we get a palindrome (55512421555).

The spelling of 12400221134 in words is "twelve billion, four hundred million, two hundred twenty-one thousand, one hundred thirty-four".