201212320101 has 16 divisors (see below), whose sum is σ = 289547005440. Its totient is φ = 123554358720.

The previous prime is 201212320091. The next prime is 201212320151. The reversal of 201212320101 is 101023212102.

201212320101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201212320101 - 2²⁹ = 200675449189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212320151) 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 15 ways as a sum of consecutive naturals, for example, 5577781 + ... + 5613738.

It is an arithmetic number, because the mean of its divisors is an integer number (18096687840).

Almost surely, 2^201212320101 is an apocalyptic number.

It is an amenable number.

201212320101 is a deficient number, since it is larger than the sum of its proper divisors (88334685339).

201212320101 is a wasteful number, since it uses less digits than its factorization.

201212320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11191996.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201212320101 its reverse (101023212102), we get a palindrome (302235532203).

The spelling of 201212320101 in words is "two hundred one billion, two hundred twelve million, three hundred twenty thousand, one hundred one".