20123221010011 has 8 divisors (see below), whose sum is σ = 23791000209120. Its totient is φ = 16653700146048.

The previous prime is 20123221009981. The next prime is 20123221010027. The reversal of 20123221010011 is 11001012232102.

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

It is not a de Polignac number, because 20123221010011 - 2⁴¹ = 17924197754459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123221010041) 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, 49564583566 + ... + 49564583971.

It is an arithmetic number, because the mean of its divisors is an integer number (2973875026140).

Almost surely, 2^{20123221010011} is an apocalyptic number.

20123221010011 is a deficient number, since it is larger than the sum of its proper divisors (3667779199109).

20123221010011 is an equidigital number, since it uses as much as digits as its factorization.

20123221010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99129167573.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20123221010011 its reverse (11001012232102), we get a palindrome (31124233242113).

The spelling of 20123221010011 in words is "twenty trillion, one hundred twenty-three billion, two hundred twenty-one million, ten thousand, eleven".