20343122111 has 8 divisors (see below), whose sum is σ = 22011809904. Its totient is φ = 18689267520.

The previous prime is 20343122083. The next prime is 20343122123. The reversal of 20343122111 is 11122134302.

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 20343122111 - 2¹⁸ = 20342859967 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 (20343122171) 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, 3705446 + ... + 3710931.

It is an arithmetic number, because the mean of its divisors is an integer number (2751476238).

Almost surely, 2^20343122111 is an apocalyptic number.

20343122111 is a deficient number, since it is larger than the sum of its proper divisors (1668687793).

20343122111 is a wasteful number, since it uses less digits than its factorization.

20343122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416601.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20343122111 its reverse (11122134302), we get a palindrome (31465256413).

The spelling of 20343122111 in words is "twenty billion, three hundred forty-three million, one hundred twenty-two thousand, one hundred eleven".