20113103321 has 2 divisors, whose sum is σ = 20113103322. Its totient is φ = 20113103320.

The previous prime is 20113103293. The next prime is 20113103333. The reversal of 20113103321 is 12330131102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11724558400 + 8388544921 = 108280^2 + 91589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20113103321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20113103321.

It is not a weakly prime, because it can be changed into another prime (20113103221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056551660 + 10056551661.

It is an arithmetic number, because the mean of its divisors is an integer number (10056551661).

Almost surely, 2^20113103321 is an apocalyptic number.

It is an amenable number.

20113103321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113103321 is an equidigital number, since it uses as much as digits as its factorization.

20113103321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20113103321 its reverse (12330131102), we get a palindrome (32443234423).

The spelling of 20113103321 in words is "twenty billion, one hundred thirteen million, one hundred three thousand, three hundred twenty-one".