201211220220233 has 2 divisors, whose sum is σ = 201211220220234. Its totient is φ = 201211220220232.

The previous prime is 201211220220211. The next prime is 201211220220313. The reversal of 201211220220233 is 332022022112102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168659779400464 + 32551440819769 = 12986908^2 + 5705387^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211220220233 - 2⁶ = 201211220220169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201211220220199 and 201211220220208.

It is not a weakly prime, because it can be changed into another prime (201211220228233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605610110116 + 100605610110117.

It is an arithmetic number, because the mean of its divisors is an integer number (100605610110117).

Almost surely, 2^{201211220220233} is an apocalyptic number.

It is an amenable number.

201211220220233 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211220220233 is an equidigital number, since it uses as much as digits as its factorization.

201211220220233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201211220220233 its reverse (332022022112102), we get a palindrome (533233242332335).

The spelling of 201211220220233 in words is "two hundred one trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty thousand, two hundred thirty-three".