12215442036 has 24 divisors (see below), whose sum is σ = 32574512320. Its totient is φ = 3490126272.

The previous prime is 12215441999. The next prime is 12215442037. The reversal of 12215442036 is 63024451221.

It is a junction number, because it is equal to n+sod(n) for n = 12215441994 and 12215442012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215442037) 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, 72710881 + ... + 72711048.

Almost surely, 2^12215442036 is an apocalyptic number.

It is an amenable number.

12215442036 is an abundant number, since it is smaller than the sum of its proper divisors (20359070284).

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

12215442036 is a wasteful number, since it uses less digits than its factorization.

12215442036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145421943 (or 145421941 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12215442036 its reverse (63024451221), we get a palindrome (75239893257).

The spelling of 12215442036 in words is "twelve billion, two hundred fifteen million, four hundred forty-two thousand, thirty-six".