20303122111 has 16 divisors (see below), whose sum is σ = 21399240960. Its totient is φ = 19236851200.

The previous prime is 20303122109. The next prime is 20303122127. The reversal of 20303122111 is 11122130302.

It is a cyclic number.

It is not a de Polignac number, because 20303122111 - 2¹ = 20303122109 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 (20303123111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300306 + ... + 361648.

It is an arithmetic number, because the mean of its divisors is an integer number (1337452560).

Almost surely, 2^20303122111 is an apocalyptic number.

20303122111 is a deficient number, since it is larger than the sum of its proper divisors (1096118849).

20303122111 is a wasteful number, since it uses less digits than its factorization.

20303122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61586.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20303122111 its reverse (11122130302), we get a palindrome (31425252413).

The spelling of 20303122111 in words is "twenty billion, three hundred three million, one hundred twenty-two thousand, one hundred eleven".