22001010020221 has 32 divisors (see below), whose sum is σ = 23726057172480. Its totient is φ = 20324927594496.

The previous prime is 22001010020189. The next prime is 22001010020237. The reversal of 22001010020221 is 12202001010022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22001010020221 - 2⁵ = 22001010020189 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 (22001010020921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2580154060 + ... + 2580162586.

It is an arithmetic number, because the mean of its divisors is an integer number (741439286640).

Almost surely, 2^{22001010020221} is an apocalyptic number.

It is an amenable number.

22001010020221 is a deficient number, since it is larger than the sum of its proper divisors (1725047152259).

22001010020221 is a wasteful number, since it uses less digits than its factorization.

22001010020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12213.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22001010020221 its reverse (12202001010022), we get a palindrome (34203011030243).

The spelling of 22001010020221 in words is "twenty-two trillion, one billion, ten million, twenty thousand, two hundred twenty-one".