201420442211 has 4 divisors (see below), whose sum is σ = 201513997752. Its totient is φ = 201326886672.

The previous prime is 201420442207. The next prime is 201420442217. The reversal of 201420442211 is 112244024102.

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 201420442211 - 2² = 201420442207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201420442217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46774541 + ... + 46778846.

It is an arithmetic number, because the mean of its divisors is an integer number (50378499438).

Almost surely, 2^201420442211 is an apocalyptic number.

201420442211 is a deficient number, since it is larger than the sum of its proper divisors (93555541).

201420442211 is an equidigital number, since it uses as much as digits as its factorization.

201420442211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93555540.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 201420442211 its reverse (112244024102), we get a palindrome (313664466313).

The spelling of 201420442211 in words is "two hundred one billion, four hundred twenty million, four hundred forty-two thousand, two hundred eleven".