1200012198 has 64 divisors (see below), whose sum is σ = 3003360768. Its totient is φ = 310533120.

The previous prime is 1200012193. The next prime is 1200012221. The reversal of 1200012198 is 8912100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200012193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123286 + ... + 132662.

It is an arithmetic number, because the mean of its divisors is an integer number (46927512).

Almost surely, 2^1200012198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200012198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501680384).

1200012198 is an abundant number, since it is smaller than the sum of its proper divisors (1803348570).

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

1200012198 is a wasteful number, since it uses less digits than its factorization.

1200012198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 1200012198 is about 34641.1922138947. The cubic root of 1200012198 is about 1062.6621698119.

The spelling of 1200012198 in words is "one billion, two hundred million, twelve thousand, one hundred ninety-eight".