201211030101 has 16 divisors (see below), whose sum is σ = 272304586688. Its totient is φ = 132129360000.

The previous prime is 201211030091. The next prime is 201211030127. The reversal of 201211030101 is 101030112102.

It is not a de Polignac number, because 201211030101 - 2²¹ = 201208932949 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 (201211030151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4015401 + ... + 4065201.

It is an arithmetic number, because the mean of its divisors is an integer number (17019036668).

Almost surely, 2^201211030101 is an apocalyptic number.

It is an amenable number.

201211030101 is a deficient number, since it is larger than the sum of its proper divisors (71093556587).

201211030101 is a wasteful number, since it uses less digits than its factorization.

201211030101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69972.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 201211030101 its reverse (101030112102), we get a palindrome (302241142203).

The spelling of 201211030101 in words is "two hundred one billion, two hundred eleven million, thirty thousand, one hundred one".