12221139198 has 8 divisors (see below), whose sum is σ = 24442278408. Its totient is φ = 4073713064.

The previous prime is 12221139181. The next prime is 12221139199. The reversal of 12221139198 is 89193112221.

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

12221139198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221139199) 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, 1018428261 + ... + 1018428272.

It is an arithmetic number, because the mean of its divisors is an integer number (3055284801).

Almost surely, 2^12221139198 is an apocalyptic number.

12221139198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12221139198 is a wasteful number, since it uses less digits than its factorization.

12221139198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036856538.

The product of its digits is 15552, while the sum is 39.

The spelling of 12221139198 in words is "twelve billion, two hundred twenty-one million, one hundred thirty-nine thousand, one hundred ninety-eight".