201211231030101 has 6 divisors (see below), whose sum is σ = 290638444821270. Its totient is φ = 134140820686728.

The previous prime is 201211231030093. The next prime is 201211231030133. The reversal of 201211231030101 is 101030132112102.

201211231030101 is a `hidden beast` number, since 20 + 1 + 21 + 12 + 310 + 301 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 147403152540900 + 53808078489201 = 12140970^2 + 7335399^2 .

It is not a de Polignac number, because 201211231030101 - 2³ = 201211231030093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211231030001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11178401723886 + ... + 11178401723903.

It is an arithmetic number, because the mean of its divisors is an integer number (48439740803545).

Almost surely, 2^{201211231030101} is an apocalyptic number.

It is an amenable number.

201211231030101 is a deficient number, since it is larger than the sum of its proper divisors (89427213791169).

201211231030101 is a wasteful number, since it uses less digits than its factorization.

201211231030101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22356803447795 (or 22356803447792 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 201211231030101 its reverse (101030132112102), we get a palindrome (302241363142203).

The spelling of 201211231030101 in words is "two hundred one trillion, two hundred eleven billion, two hundred thirty-one million, thirty thousand, one hundred one".