20002122111001 has 4 divisors (see below), whose sum is σ = 20871779594112. Its totient is φ = 19132464627892.

The previous prime is 20002122110953. The next prime is 20002122111073. The reversal of 20002122111001 is 10011122120002.

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 20002122111001 - 2¹¹ = 20002122108953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002122111701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434828741521 + ... + 434828741566.

It is an arithmetic number, because the mean of its divisors is an integer number (5217944898528).

Almost surely, 2^{20002122111001} is an apocalyptic number.

It is an amenable number.

20002122111001 is a deficient number, since it is larger than the sum of its proper divisors (869657483111).

20002122111001 is an equidigital number, since it uses as much as digits as its factorization.

20002122111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869657483110.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20002122111001 its reverse (10011122120002), we get a palindrome (30013244231003).

Subtracting from 20002122111001 its reverse (10011122120002), we obtain a palindrome (9990999990999).

The spelling of 20002122111001 in words is "twenty trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, one".