20201122111 has 8 divisors (see below), whose sum is σ = 21092571360. Its totient is φ = 19310767872.

The previous prime is 20201122043. The next prime is 20201122121. The reversal of 20201122111 is 11122110202.

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

It is a cyclic number.

It is not a de Polignac number, because 20201122111 - 2³³ = 11611187519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201122091 and 20201122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201122121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235930 + ... + 309943.

It is an arithmetic number, because the mean of its divisors is an integer number (2636571420).

Almost surely, 2^20201122111 is an apocalyptic number.

20201122111 is a deficient number, since it is larger than the sum of its proper divisors (891449249).

20201122111 is a wasteful number, since it uses less digits than its factorization.

20201122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547505.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20201122111 its reverse (11122110202), we get a palindrome (31323232313).

The spelling of 20201122111 in words is "twenty billion, two hundred one million, one hundred twenty-two thousand, one hundred eleven".