12215435044 has 6 divisors (see below), whose sum is σ = 21377011334. Its totient is φ = 6107717520.

The previous prime is 12215435009. The next prime is 12215435047. The reversal of 12215435044 is 44053451221.

It can be written as a sum of positive squares in only one way, i.e., 9984006400 + 2231428644 = 99920^2 + 47238^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12215434997 and 12215435015.

It is not an unprimeable number, because it can be changed into a prime (12215435047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1526929377 + ... + 1526929384.

Almost surely, 2^12215435044 is an apocalyptic number.

It is an amenable number.

12215435044 is a deficient number, since it is larger than the sum of its proper divisors (9161576290).

12215435044 is a wasteful number, since it uses less digits than its factorization.

12215435044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053858765 (or 3053858763 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 12215435044 its reverse (44053451221), we get a palindrome (56268886265).

The spelling of 12215435044 in words is "twelve billion, two hundred fifteen million, four hundred thirty-five thousand, forty-four".