201211200101 has 4 divisors (see below), whose sum is σ = 201237533952. Its totient is φ = 201184866252.

The previous prime is 201211200053. The next prime is 201211200131. The reversal of 201211200101 is 101002112102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201211200101 - 2¹⁴ = 201211183717 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 (201211200131) 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, 13155461 + ... + 13170746.

It is an arithmetic number, because the mean of its divisors is an integer number (50309383488).

Almost surely, 2^201211200101 is an apocalyptic number.

It is an amenable number.

201211200101 is a deficient number, since it is larger than the sum of its proper divisors (26333851).

201211200101 is an equidigital number, since it uses as much as digits as its factorization.

201211200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26333850.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201211200101 its reverse (101002112102), we get a palindrome (302213312203).

The spelling of 201211200101 in words is "two hundred one billion, two hundred eleven million, two hundred thousand, one hundred one".