20123300111 has 2 divisors, whose sum is σ = 20123300112. Its totient is φ = 20123300110.

The previous prime is 20123300081. The next prime is 20123300123. The reversal of 20123300111 is 11100332102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20123300111 - 2¹⁴ = 20123283727 is a prime.

It is a super-2 number, since 2×20123300111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123300611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061650055 + 10061650056.

It is an arithmetic number, because the mean of its divisors is an integer number (10061650056).

Almost surely, 2^20123300111 is an apocalyptic number.

20123300111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123300111 is an equidigital number, since it uses as much as digits as its factorization.

20123300111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20123300111 its reverse (11100332102), we get a palindrome (31223632213).

The spelling of 20123300111 in words is "twenty billion, one hundred twenty-three million, three hundred thousand, one hundred eleven".