20211311120303 has 2 divisors, whose sum is σ = 20211311120304. Its totient is φ = 20211311120302.

The previous prime is 20211311120291. The next prime is 20211311120309. The reversal of 20211311120303 is 30302111311202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20211311120303 - 2²⁰ = 20211310071727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211311120309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105655560151 + 10105655560152.

It is an arithmetic number, because the mean of its divisors is an integer number (10105655560152).

Almost surely, 2^{20211311120303} is an apocalyptic number.

20211311120303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211311120303 is an equidigital number, since it uses as much as digits as its factorization.

20211311120303 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 20.

Adding to 20211311120303 its reverse (30302111311202), we get a palindrome (50513422431505).

The spelling of 20211311120303 in words is "twenty trillion, two hundred eleven billion, three hundred eleven million, one hundred twenty thousand, three hundred three".