1222312240311 has 4 divisors (see below), whose sum is σ = 1629749653752. Its totient is φ = 814874826872.

The previous prime is 1222312240307. The next prime is 1222312240337. The reversal of 1222312240311 is 1130422132221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222312240311 - 2² = 1222312240307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222312240301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203718706716 + ... + 203718706721.

It is an arithmetic number, because the mean of its divisors is an integer number (407437413438).

Almost surely, 2^{1222312240311} is an apocalyptic number.

1222312240311 is a deficient number, since it is larger than the sum of its proper divisors (407437413441).

1222312240311 is an equidigital number, since it uses as much as digits as its factorization.

1222312240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407437413440.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1222312240311 its reverse (1130422132221), we get a palindrome (2352734372532).

The spelling of 1222312240311 in words is "one trillion, two hundred twenty-two billion, three hundred twelve million, two hundred forty thousand, three hundred eleven".