198321222 has 16 divisors (see below), whose sum is σ = 432700992. Its totient is φ = 60097320.

The previous prime is 198321209. The next prime is 198321239. The reversal of 198321222 is 222123891.

It is a self number, because there is not a number n which added to its sum of digits gives 198321222.

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, 1502368 + ... + 1502499.

It is an arithmetic number, because the mean of its divisors is an integer number (27043812).

Almost surely, 2^198321222 is an apocalyptic number.

198321222 is an abundant number, since it is smaller than the sum of its proper divisors (234379770).

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

198321222 is a wasteful number, since it uses less digits than its factorization.

198321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004883.

The product of its digits is 3456, while the sum is 30.

The square root of 198321222 is about 14082.6567805936. The cubic root of 198321222 is about 583.1626890971.

The spelling of 198321222 in words is "one hundred ninety-eight million, three hundred twenty-one thousand, two hundred twenty-two".