197220002 has 12 divisors (see below), whose sum is σ = 344128950. Its totient is φ = 84522816.

The previous prime is 197219993. The next prime is 197220007. The reversal of 197220002 is 200022791.

It can be written as a sum of positive squares in only one way, i.e., 193460281 + 3759721 = 13909^2 + 1939^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 197220002.

It is not an unprimeable number, because it can be changed into a prime (197220007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006127 + ... + 1006322.

Almost surely, 2^197220002 is an apocalyptic number.

197220002 is a deficient number, since it is larger than the sum of its proper divisors (146908948).

197220002 is a wasteful number, since it uses less digits than its factorization.

197220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012465 (or 2012458 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 197220002 is about 14043.5039075011. The cubic root of 197220002 is about 582.0813075511.

Adding to 197220002 its reverse (200022791), we get a palindrome (397242793).

The spelling of 197220002 in words is "one hundred ninety-seven million, two hundred twenty thousand, two".