20012200002221 has 16 divisors (see below), whose sum is σ = 23033148672000. Its totient is φ = 17031852730368.

The previous prime is 20012200002169. The next prime is 20012200002229. The reversal of 20012200002221 is 12220000221002.

It is not a de Polignac number, because 20012200002221 - 2¹⁰ = 20012200001197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012200002196 and 20012200002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012200002229) 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, 763085 + ... + 6372338.

It is an arithmetic number, because the mean of its divisors is an integer number (1439571792000).

Almost surely, 2^{20012200002221} is an apocalyptic number.

It is an amenable number.

20012200002221 is a deficient number, since it is larger than the sum of its proper divisors (3020948669779).

20012200002221 is a wasteful number, since it uses less digits than its factorization.

20012200002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7138268.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20012200002221 its reverse (12220000221002), we get a palindrome (32232200223223).

The spelling of 20012200002221 in words is "twenty trillion, twelve billion, two hundred million, two thousand, two hundred twenty-one".