20211011110221 has 8 divisors (see below), whose sum is σ = 26983897659264. Its totient is φ = 13456065984000.

The previous prime is 20211011110141. The next prime is 20211011110271. The reversal of 20211011110221 is 12201111011202.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20211011110221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20211011110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211011110271) 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, 4485353076 + ... + 4485357581.

It is an arithmetic number, because the mean of its divisors is an integer number (3372987207408).

Almost surely, 2^{20211011110221} is an apocalyptic number.

It is an amenable number.

20211011110221 is a deficient number, since it is larger than the sum of its proper divisors (6772886549043).

20211011110221 is an equidigital number, since it uses as much as digits as its factorization.

20211011110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8970711411.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20211011110221 its reverse (12201111011202), we get a palindrome (32412122121423).

The spelling of 20211011110221 in words is "twenty trillion, two hundred eleven billion, eleven million, one hundred ten thousand, two hundred twenty-one".