20201122001111 has 4 divisors (see below), whose sum is σ = 21389423295312. Its totient is φ = 19012820706912.

The previous prime is 20201122001089. The next prime is 20201122001131. The reversal of 20201122001111 is 11110022110202.

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 20201122001111 - 2¹⁴ = 20201121984727 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 (20201122001131) 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, 594150647075 + ... + 594150647108.

It is an arithmetic number, because the mean of its divisors is an integer number (5347355823828).

Almost surely, 2^{20201122001111} is an apocalyptic number.

20201122001111 is a deficient number, since it is larger than the sum of its proper divisors (1188301294201).

20201122001111 is a wasteful number, since it uses less digits than its factorization.

20201122001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188301294200.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20201122001111 its reverse (11110022110202), we get a palindrome (31311144111313).

The spelling of 20201122001111 in words is "twenty trillion, two hundred one billion, one hundred twenty-two million, one thousand, one hundred eleven".