20211233330231 has 2 divisors, whose sum is σ = 20211233330232. Its totient is φ = 20211233330230.

The previous prime is 20211233330143. The next prime is 20211233330297. The reversal of 20211233330231 is 13203333211202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20211233330231 - 2¹⁴ = 20211233313847 is a prime.

It is a super-2 number, since 2×20211233330231² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20211233330231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211233830231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105616665115 + 10105616665116.

It is an arithmetic number, because the mean of its divisors is an integer number (10105616665116).

Almost surely, 2^{20211233330231} is an apocalyptic number.

20211233330231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211233330231 is an equidigital number, since it uses as much as digits as its factorization.

20211233330231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20211233330231 its reverse (13203333211202), we get a palindrome (33414566541433).

The spelling of 20211233330231 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-three million, three hundred thirty thousand, two hundred thirty-one".