1211303310023 has 2 divisors, whose sum is σ = 1211303310024. Its totient is φ = 1211303310022.

The previous prime is 1211303309873. The next prime is 1211303310031. The reversal of 1211303310023 is 3200133031121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211303310023 - 2¹⁸ = 1211303047879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211303309977 and 1211303310004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211303316023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605651655011 + 605651655012.

It is an arithmetic number, because the mean of its divisors is an integer number (605651655012).

Almost surely, 2^{1211303310023} is an apocalyptic number.

1211303310023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211303310023 is an equidigital number, since it uses as much as digits as its factorization.

1211303310023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1211303310023 its reverse (3200133031121), we get a palindrome (4411436341144).

The spelling of 1211303310023 in words is "one trillion, two hundred eleven billion, three hundred three million, three hundred ten thousand, twenty-three".