12212543450784 has 192 divisors, whose sum is σ = 32852403118080. Its totient is φ = 3970921743360.

The previous prime is 12212543450711. The next prime is 12212543450803. The reversal of 12212543450784 is 48705434521221.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 618065097 + ... + 618084855.

It is an arithmetic number, because the mean of its divisors is an integer number (171106266240).

Almost surely, 2^{12212543450784} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212543450784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16426201559040).

12212543450784 is an abundant number, since it is smaller than the sum of its proper divisors (20639859667296).

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

12212543450784 is a wasteful number, since it uses less digits than its factorization.

12212543450784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20523 (or 20515 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 12212543450784 in words is "twelve trillion, two hundred twelve billion, five hundred forty-three million, four hundred fifty thousand, seven hundred eighty-four".