198218029012 has 24 divisors (see below), whose sum is σ = 347504661504. Its totient is φ = 98931131712.

The previous prime is 198218029007. The next prime is 198218029033. The reversal of 198218029012 is 210920812891.

It is a super-2 number, since 2×198218029012² (a number of 23 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 198218029012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5697133 + ... + 5731819.

It is an arithmetic number, because the mean of its divisors is an integer number (14479360896).

Almost surely, 2^198218029012 is an apocalyptic number.

It is an amenable number.

198218029012 is a deficient number, since it is larger than the sum of its proper divisors (149286632492).

198218029012 is a wasteful number, since it uses less digits than its factorization.

198218029012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37215 (or 37213 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 198218029012 in words is "one hundred ninety-eight billion, two hundred eighteen million, twenty-nine thousand, twelve".