12212221194 has 24 divisors (see below), whose sum is σ = 26668162560. Its totient is φ = 4038686568.

The previous prime is 12212221193. The next prime is 12212221213. The reversal of 12212221194 is 49112221221.

It is not an unprimeable number, because it can be changed into a prime (12212221193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2668804 + ... + 2673375.

It is an arithmetic number, because the mean of its divisors is an integer number (1111173440).

Almost surely, 2^12212221194 is an apocalyptic number.

12212221194 is an abundant number, since it is smaller than the sum of its proper divisors (14455941366).

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

12212221194 is a wasteful number, since it uses less digits than its factorization.

12212221194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342314 (or 5342311 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

Adding to 12212221194 its sum of digits (27), we get a palindrome (12212221221).

The spelling of 12212221194 in words is "twelve billion, two hundred twelve million, two hundred twenty-one thousand, one hundred ninety-four".