20213133322111 has 4 divisors (see below), whose sum is σ = 20235419026792. Its totient is φ = 20190847617432.

The previous prime is 20213133322093. The next prime is 20213133322127. The reversal of 20213133322111 is 11122333131202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20213133322111 - 2¹⁵ = 20213133289343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213133322141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11142850980 + ... + 11142852793.

It is an arithmetic number, because the mean of its divisors is an integer number (5058854756698).

Almost surely, 2^{20213133322111} is an apocalyptic number.

20213133322111 is a deficient number, since it is larger than the sum of its proper divisors (22285704681).

20213133322111 is an equidigital number, since it uses as much as digits as its factorization.

20213133322111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22285704680.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 20213133322111 its reverse (11122333131202), we get a palindrome (31335466453313).

The spelling of 20213133322111 in words is "twenty trillion, two hundred thirteen billion, one hundred thirty-three million, three hundred twenty-two thousand, one hundred eleven".