20112000211221 has 8 divisors (see below), whose sum is σ = 26816328436800. Its totient is φ = 13407836063232.

The previous prime is 20112000211187. The next prime is 20112000211243. The reversal of 20112000211221 is 12211200021102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20112000211221 - 2¹¹ = 20112000209173 is a prime.

It is a super-2 number, since 2×20112000211221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20112000211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112000211021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40733100 + ... + 41223893.

It is an arithmetic number, because the mean of its divisors is an integer number (3352041054600).

Almost surely, 2^{20112000211221} is an apocalyptic number.

It is an amenable number.

20112000211221 is a deficient number, since it is larger than the sum of its proper divisors (6704328225579).

20112000211221 is an equidigital number, since it uses as much as digits as its factorization.

20112000211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82038795.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112000211221 its reverse (12211200021102), we get a palindrome (32323200232323).

The spelling of 20112000211221 in words is "twenty trillion, one hundred twelve billion, two hundred eleven thousand, two hundred twenty-one".