2211221220233 has 2 divisors, whose sum is σ = 2211221220234. Its totient is φ = 2211221220232.

The previous prime is 2211221220223. The next prime is 2211221220239. The reversal of 2211221220233 is 3320221221122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2193218826304 + 18002393929 = 1480952^2 + 134173^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211221220233 - 2²² = 2211217025929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211221220199 and 2211221220208.

It is not a weakly prime, because it can be changed into another prime (2211221220239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105610610116 + 1105610610117.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610610117).

Almost surely, 2^{2211221220233} is an apocalyptic number.

It is an amenable number.

2211221220233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211221220233 is an equidigital number, since it uses as much as digits as its factorization.

2211221220233 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 2211221220233 its reverse (3320221221122), we get a palindrome (5531442441355).

The spelling of 2211221220233 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, two hundred thirty-three".