201219197 has 8 divisors (see below), whose sum is σ = 208704600. Its totient is φ = 193770304.

The previous prime is 201219167. The next prime is 201219199. The reversal of 201219197 is 791912102.

It can be written as a sum of positive squares in 4 ways, for example, as 40081561 + 161137636 = 6331^2 + 12694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201219197 - 2¹² = 201215101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201219199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2363 + ... + 20199.

It is an arithmetic number, because the mean of its divisors is an integer number (26088075).

Almost surely, 2^201219197 is an apocalyptic number.

It is an amenable number.

201219197 is a deficient number, since it is larger than the sum of its proper divisors (7485403).

201219197 is a wasteful number, since it uses less digits than its factorization.

201219197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18255.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 201219197 is about 14185.1752544690. The cubic root of 201219197 is about 585.9894590159.

The spelling of 201219197 in words is "two hundred one million, two hundred nineteen thousand, one hundred ninety-seven".