12215586028 has 48 divisors (see below), whose sum is σ = 24168291840. Its totient is φ = 5370672384.

The previous prime is 12215586023. The next prime is 12215586067. The reversal of 12215586028 is 82068551221.

It is not an unprimeable number, because it can be changed into a prime (12215586023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23568 + ... + 158071.

It is an arithmetic number, because the mean of its divisors is an integer number (503506080).

Almost surely, 2^12215586028 is an apocalyptic number.

It is an amenable number.

12215586028 is a deficient number, since it is larger than the sum of its proper divisors (11952705812).

12215586028 is a wasteful number, since it uses less digits than its factorization.

12215586028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181726 (or 181724 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 12215586028 in words is "twelve billion, two hundred fifteen million, five hundred eighty-six thousand, twenty-eight".