12212027018 has 8 divisors (see below), whose sum is σ = 18321738948. Its totient is φ = 6104780704.

The previous prime is 12212027017. The next prime is 12212027029. The reversal of 12212027018 is 81072021221.

It can be written as a sum of positive squares in 2 ways, for example, as 9840044809 + 2371982209 = 99197^2 + 48703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12212027017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603971 + ... + 623862.

Almost surely, 2^12212027018 is an apocalyptic number.

12212027018 is a deficient number, since it is larger than the sum of its proper divisors (6109711930).

12212027018 is a wasteful number, since it uses less digits than its factorization.

12212027018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232808.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 12212027018 its reverse (81072021221), we get a palindrome (93284048239).

The spelling of 12212027018 in words is "twelve billion, two hundred twelve million, twenty-seven thousand, eighteen".