201020010022221 has 16 divisors (see below), whose sum is σ = 288646135513344. Its totient is φ = 123703756455744.

The previous prime is 201020010022217. The next prime is 201020010022229. The reversal of 201020010022221 is 122220010020102.

It is not a de Polignac number, because 201020010022221 - 2² = 201020010022217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201020010022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020010022229) 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, 12351946 + ... + 23550171.

It is an arithmetic number, because the mean of its divisors is an integer number (18040383469584).

Almost surely, 2^{201020010022221} is an apocalyptic number.

It is an amenable number.

201020010022221 is a deficient number, since it is larger than the sum of its proper divisors (87626125491123).

201020010022221 is a wasteful number, since it uses less digits than its factorization.

201020010022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36045700.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201020010022221 its reverse (122220010020102), we get a palindrome (323240020042323).

The spelling of 201020010022221 in words is "two hundred one trillion, twenty billion, ten million, twenty-two thousand, two hundred twenty-one".