201020021122109 has 16 divisors (see below), whose sum is σ = 229904549376000. Its totient is φ = 172177344733680.

The previous prime is 201020021122051. The next prime is 201020021122111. The reversal of 201020021122109 is 901221120020102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020021122109 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 (201020021127109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419427392 + ... + 419906390.

It is an arithmetic number, because the mean of its divisors is an integer number (14369034336000).

Almost surely, 2^{201020021122109} is an apocalyptic number.

It is an amenable number.

201020021122109 is a deficient number, since it is larger than the sum of its proper divisors (28884528253891).

201020021122109 is a wasteful number, since it uses less digits than its factorization.

201020021122109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522560.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 201020021122109 in words is "two hundred one trillion, twenty billion, twenty-one million, one hundred twenty-two thousand, one hundred nine".