2221311230311 has 2 divisors, whose sum is σ = 2221311230312. Its totient is φ = 2221311230310.

The previous prime is 2221311230269. The next prime is 2221311230321. The reversal of 2221311230311 is 1130321131222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221311230311 - 2¹⁵ = 2221311197543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221311230321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110655615155 + 1110655615156.

It is an arithmetic number, because the mean of its divisors is an integer number (1110655615156).

Almost surely, 2^{2221311230311} is an apocalyptic number.

2221311230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221311230311 is an equidigital number, since it uses as much as digits as its factorization.

2221311230311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2221311230311 its reverse (1130321131222), we get a palindrome (3351632361533).

The spelling of 2221311230311 in words is "two trillion, two hundred twenty-one billion, three hundred eleven million, two hundred thirty thousand, three hundred eleven".