20111320101329 has 2 divisors, whose sum is σ = 20111320101330. Its totient is φ = 20111320101328.

The previous prime is 20111320101287. The next prime is 20111320101349. The reversal of 20111320101329 is 92310102311102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15175582492225 + 4935737609104 = 3895585^2 + 2221652^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111320101329 - 2⁸ = 20111320101073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20111320101298 and 20111320101307.

It is not a weakly prime, because it can be changed into another prime (20111320101349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055660050664 + 10055660050665.

It is an arithmetic number, because the mean of its divisors is an integer number (10055660050665).

Almost surely, 2^{20111320101329} is an apocalyptic number.

It is an amenable number.

20111320101329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111320101329 is an equidigital number, since it uses as much as digits as its factorization.

20111320101329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 20111320101329 in words is "twenty trillion, one hundred eleven billion, three hundred twenty million, one hundred one thousand, three hundred twenty-nine".