20211233030311 has 2 divisors, whose sum is σ = 20211233030312. Its totient is φ = 20211233030310.

The previous prime is 20211233030299. The next prime is 20211233030327. The reversal of 20211233030311 is 11303033211202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211233030311 - 2⁵ = 20211233030279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211233030341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105616515155 + 10105616515156.

It is an arithmetic number, because the mean of its divisors is an integer number (10105616515156).

Almost surely, 2^{20211233030311} is an apocalyptic number.

20211233030311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211233030311 is an equidigital number, since it uses as much as digits as its factorization.

20211233030311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20211233030311 its reverse (11303033211202), we get a palindrome (31514266241513).

The spelling of 20211233030311 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-three million, thirty thousand, three hundred eleven".