12217227401712 has 40 divisors (see below), whose sum is σ = 31941425867904. Its totient is φ = 4023343962304.

The previous prime is 12217227401653. The next prime is 12217227401719. The reversal of 12217227401712 is 21710472271221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12217227401719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533282588 + ... + 1533290555.

Almost surely, 2^{12217227401712} is an apocalyptic number.

12217227401712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12217227401712 is an abundant number, since it is smaller than the sum of its proper divisors (19724198466192).

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

12217227401712 is a wasteful number, since it uses less digits than its factorization.

12217227401712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066573237 (or 3066573231 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 39.

Adding to 12217227401712 its reverse (21710472271221), we get a palindrome (33927699672933).

The spelling of 12217227401712 in words is "twelve trillion, two hundred seventeen billion, two hundred twenty-seven million, four hundred one thousand, seven hundred twelve".