20133223111 has 2 divisors, whose sum is σ = 20133223112. Its totient is φ = 20133223110.

The previous prime is 20133223093. The next prime is 20133223157. The reversal of 20133223111 is 11132233102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20133223111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133223181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066611555 + 10066611556.

It is an arithmetic number, because the mean of its divisors is an integer number (10066611556).

Almost surely, 2^20133223111 is an apocalyptic number.

20133223111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133223111 is an equidigital number, since it uses as much as digits as its factorization.

20133223111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20133223111 its reverse (11132233102), we get a palindrome (31265456213).

Subtracting from 20133223111 its reverse (11132233102), we obtain a palindrome (9000990009).

The spelling of 20133223111 in words is "twenty billion, one hundred thirty-three million, two hundred twenty-three thousand, one hundred eleven".