12212203440000 has 160 divisors (see below), whose sum is σ = 40535357064840. Its totient is φ = 3256587520000.

The previous prime is 12212203439999. The next prime is 12212203440007. The reversal of 12212203440000 is 4430221221.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212203440007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25202091 + ... + 25682090.

Almost surely, 2^{12212203440000} is an apocalyptic number.

12212203440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212203440000 is an abundant number, since it is smaller than the sum of its proper divisors (28323153624840).

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

12212203440000 is an frugal number, since it uses more digits than its factorization.

12212203440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50884218 (or 50884191 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12212203440000 its reverse (4430221221), we get a palindrome (12216633661221).

The spelling of 12212203440000 in words is "twelve trillion, two hundred twelve billion, two hundred three million, four hundred forty thousand".