1213225538347 has 2 divisors, whose sum is σ = 1213225538348. Its totient is φ = 1213225538346.

The previous prime is 1213225538321. The next prime is 1213225538353. The reversal of 1213225538347 is 7438355223121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213225538347 - 2⁷ = 1213225538219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213225538297 and 1213225538306.

It is not a weakly prime, because it can be changed into another prime (1213225530347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606612769173 + 606612769174.

It is an arithmetic number, because the mean of its divisors is an integer number (606612769174).

Almost surely, 2^{1213225538347} is an apocalyptic number.

1213225538347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213225538347 is an equidigital number, since it uses as much as digits as its factorization.

1213225538347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 46.

The spelling of 1213225538347 in words is "one trillion, two hundred thirteen billion, two hundred twenty-five million, five hundred thirty-eight thousand, three hundred forty-seven".