20002110002221 has 16 divisors (see below), whose sum is σ = 21229231693824. Its totient is φ = 18780613323264.

The previous prime is 20002110002207. The next prime is 20002110002233. The reversal of 20002110002221 is 12220001120002.

It is a happy number.

It is not a de Polignac number, because 20002110002221 - 2³⁷ = 19864671048749 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 (20002110002201) 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 15 ways as a sum of consecutive naturals, for example, 60029140 + ... + 60361426.

It is an arithmetic number, because the mean of its divisors is an integer number (1326826980864).

Almost surely, 2^{20002110002221} is an apocalyptic number.

It is an amenable number.

20002110002221 is a deficient number, since it is larger than the sum of its proper divisors (1227121691603).

20002110002221 is a wasteful number, since it uses less digits than its factorization.

20002110002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340740.

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

Adding to 20002110002221 its reverse (12220001120002), we get a palindrome (32222111122223).

The spelling of 20002110002221 in words is "twenty trillion, two billion, one hundred ten million, two thousand, two hundred twenty-one".