1220312130311 has 2 divisors, whose sum is σ = 1220312130312. Its totient is φ = 1220312130310.

The previous prime is 1220312130223. The next prime is 1220312130329. The reversal of 1220312130311 is 1130312130221.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1130312130221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220312130311 - 2¹⁴ = 1220312113927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220312130341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610156065155 + 610156065156.

It is an arithmetic number, because the mean of its divisors is an integer number (610156065156).

Almost surely, 2^{1220312130311} is an apocalyptic number.

1220312130311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220312130311 is an equidigital number, since it uses as much as digits as its factorization.

1220312130311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1220312130311 its reverse (1130312130221), we get a palindrome (2350624260532).

The spelling of 1220312130311 in words is "one trillion, two hundred twenty billion, three hundred twelve million, one hundred thirty thousand, three hundred eleven".