12196171990 has 32 divisors (see below), whose sum is σ = 22681560384. Its totient is φ = 4718171520.

The previous prime is 12196171913. The next prime is 12196172003. The reversal of 12196171990 is 9917169121.

It is a super-2 number, since 2×12196171990² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12196171990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36901 + ... + 160480.

It is an arithmetic number, because the mean of its divisors is an integer number (708798762).

Almost surely, 2^12196171990 is an apocalyptic number.

12196171990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12196171990 is a deficient number, since it is larger than the sum of its proper divisors (10485388394).

12196171990 is a wasteful number, since it uses less digits than its factorization.

12196171990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197592.

The product of its (nonzero) digits is 61236, while the sum is 46.

The spelling of 12196171990 in words is "twelve billion, one hundred ninety-six million, one hundred seventy-one thousand, nine hundred ninety".