20133123113 has 2 divisors, whose sum is σ = 20133123114. Its totient is φ = 20133123112.

The previous prime is 20133123107. The next prime is 20133123133. The reversal of 20133123113 is 31132133102.

It is an a-pointer prime, because the next prime (20133123133) can be obtained adding 20133123113 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10316871184 + 9816251929 = 101572^2 + 99077^2 .

It is a cyclic number.

It is not a de Polignac number, because 20133123113 - 2¹⁴ = 20133106729 is a prime.

It is not a weakly prime, because it can be changed into another prime (20133123133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066561556 + 10066561557.

It is an arithmetic number, because the mean of its divisors is an integer number (10066561557).

Almost surely, 2^20133123113 is an apocalyptic number.

It is an amenable number.

20133123113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133123113 is an equidigital number, since it uses as much as digits as its factorization.

20133123113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20133123113 its reverse (31132133102), we get a palindrome (51265256215).

The spelling of 20133123113 in words is "twenty billion, one hundred thirty-three million, one hundred twenty-three thousand, one hundred thirteen".