12215003535456 has 192 divisors, whose sum is σ = 34074699079680. Its totient is φ = 3824099112960.

The previous prime is 12215003535437. The next prime is 12215003535463. The reversal of 12215003535456 is 65453530051221.

It is a super-2 number, since 2×12215003535456² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523990041 + ... + 524013351.

It is an arithmetic number, because the mean of its divisors is an integer number (177472391040).

Almost surely, 2^{12215003535456} is an apocalyptic number.

12215003535456 is a gapful number since it is divisible by the number (16) 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 12215003535456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17037349539840).

12215003535456 is an abundant number, since it is smaller than the sum of its proper divisors (21859695544224).

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

12215003535456 is a wasteful number, since it uses less digits than its factorization.

12215003535456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28477 (or 28469 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

Adding to 12215003535456 its reverse (65453530051221), we get a palindrome (77668533586677).

The spelling of 12215003535456 in words is "twelve trillion, two hundred fifteen billion, three million, five hundred thirty-five thousand, four hundred fifty-six".