20200000211221 has 32 divisors (see below), whose sum is σ = 21305719008000. Its totient is φ = 19131760427520.

The previous prime is 20200000211213. The next prime is 20200000211249. The reversal of 20200000211221 is 12211200000202.

It is a happy number.

It is not a de Polignac number, because 20200000211221 - 2³ = 20200000211213 is a prime.

It is a super-2 number, since 2×20200000211221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200000271221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195024955 + ... + 195128503.

It is an arithmetic number, because the mean of its divisors is an integer number (665803719000).

Almost surely, 2^{20200000211221} is an apocalyptic number.

It is an amenable number.

20200000211221 is a deficient number, since it is larger than the sum of its proper divisors (1105718796779).

20200000211221 is a wasteful number, since it uses less digits than its factorization.

20200000211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104589.

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

Adding to 20200000211221 its reverse (12211200000202), we get a palindrome (32411200211423).

The spelling of 20200000211221 in words is "twenty trillion, two hundred billion, two hundred eleven thousand, two hundred twenty-one".