12220187778582 has 96 divisors (see below), whose sum is σ = 28562036735232. Its totient is φ = 3475367614656.

The previous prime is 12220187778581. The next prime is 12220187778629. The reversal of 12220187778582 is 28587778102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220187778581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95583433 + ... + 95711195.

It is an arithmetic number, because the mean of its divisors is an integer number (297521215992).

Almost surely, 2^{12220187778582} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220187778582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14281018367616).

12220187778582 is an abundant number, since it is smaller than the sum of its proper divisors (16341848956650).

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

12220187778582 is a wasteful number, since it uses less digits than its factorization.

12220187778582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129282 (or 129275 counting only the distinct ones).

The product of its (nonzero) digits is 14049280, while the sum is 60.

The spelling of 12220187778582 in words is "twelve trillion, two hundred twenty billion, one hundred eighty-seven million, seven hundred seventy-eight thousand, five hundred eighty-two".