201012021011121 has 4 divisors (see below), whose sum is σ = 268016028014832. Its totient is φ = 134008014007412.

The previous prime is 201012021011089. The next prime is 201012021011129. The reversal of 201012021011121 is 121110120210102.

It is a happy number.

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 201012021011121 - 2⁵ = 201012021011089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201012021011121.

It is not an unprimeable number, because it can be changed into a prime (201012021011129) 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 3 ways as a sum of consecutive naturals, for example, 33502003501851 + ... + 33502003501856.

It is an arithmetic number, because the mean of its divisors is an integer number (67004007003708).

Almost surely, 2^{201012021011121} is an apocalyptic number.

It is an amenable number.

201012021011121 is a deficient number, since it is larger than the sum of its proper divisors (67004007003711).

201012021011121 is an equidigital number, since it uses as much as digits as its factorization.

201012021011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67004007003710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201012021011121 its reverse (121110120210102), we get a palindrome (322122141221223).

The spelling of 201012021011121 in words is "two hundred one trillion, twelve billion, twenty-one million, eleven thousand, one hundred twenty-one".