201012021011091 has 16 divisors (see below), whose sum is σ = 270904848961824. Its totient is φ = 132564886892544.

The previous prime is 201012021011089. The next prime is 201012021011129. The reversal of 201012021011091 is 190110120210102.

It is not a de Polignac number, because 201012021011091 - 2¹ = 201012021011089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201012021011041) 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 15 ways as a sum of consecutive naturals, for example, 159792186 + ... + 161045231.

It is an arithmetic number, because the mean of its divisors is an integer number (16931553060114).

Almost surely, 2^{201012021011091} is an apocalyptic number.

201012021011091 is a deficient number, since it is larger than the sum of its proper divisors (69892827950733).

201012021011091 is a wasteful number, since it uses less digits than its factorization.

201012021011091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320839670.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 201012021011091 its reverse (190110120210102), we get a palindrome (391122141221193).

The spelling of 201012021011091 in words is "two hundred one trillion, twelve billion, twenty-one million, eleven thousand, ninety-one".