201242211 has 4 divisors (see below), whose sum is σ = 268322952. Its totient is φ = 134161472.

The previous prime is 201242207. The next prime is 201242221. The reversal of 201242211 is 112242102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201242211 - 2² = 201242207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201242221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33540366 + ... + 33540371.

It is an arithmetic number, because the mean of its divisors is an integer number (67080738).

Almost surely, 2^201242211 is an apocalyptic number.

201242211 is a deficient number, since it is larger than the sum of its proper divisors (67080741).

201242211 is an equidigital number, since it uses as much as digits as its factorization.

201242211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67080740.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 201242211 is about 14185.9864302769. The cubic root of 201242211 is about 586.0117985797.

Adding to 201242211 its reverse (112242102), we get a palindrome (313484313).

The spelling of 201242211 in words is "two hundred one million, two hundred forty-two thousand, two hundred eleven".