20223122111 has 4 divisors (see below), whose sum is σ = 20357050224. Its totient is φ = 20089194000.

The previous prime is 20223122063. The next prime is 20223122113. The reversal of 20223122111 is 11122132202.

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 20223122111 - 2⁶ = 20223122047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20223122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223122113) 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, 66963830 + ... + 66964131.

It is an arithmetic number, because the mean of its divisors is an integer number (5089262556).

Almost surely, 2^20223122111 is an apocalyptic number.

20223122111 is a deficient number, since it is larger than the sum of its proper divisors (133928113).

20223122111 is a wasteful number, since it uses less digits than its factorization.

20223122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133928112.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20223122111 its reverse (11122132202), we get a palindrome (31345254313).

The spelling of 20223122111 in words is "twenty billion, two hundred twenty-three million, one hundred twenty-two thousand, one hundred eleven".