12215430502 has 16 divisors (see below), whose sum is σ = 20857969152. Its totient is φ = 5311056520.

The previous prime is 12215430457. The next prime is 12215430509. The reversal of 12215430502 is 20503451221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215430509) 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, 12070078 + ... + 12071089.

It is an arithmetic number, because the mean of its divisors is an integer number (1303623072).

Almost surely, 2^12215430502 is an apocalyptic number.

12215430502 is a deficient number, since it is larger than the sum of its proper divisors (8642538650).

12215430502 is a wasteful number, since it uses less digits than its factorization.

12215430502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24141203.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12215430502 its reverse (20503451221), we get a palindrome (32718881723).

The spelling of 12215430502 in words is "twelve billion, two hundred fifteen million, four hundred thirty thousand, five hundred two".