1212101220347 has 2 divisors, whose sum is σ = 1212101220348. Its totient is φ = 1212101220346.

The previous prime is 1212101220307. The next prime is 1212101220367. The reversal of 1212101220347 is 7430221012121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212101220347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212101220307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050610173 + 606050610174.

It is an arithmetic number, because the mean of its divisors is an integer number (606050610174).

Almost surely, 2^{1212101220347} is an apocalyptic number.

1212101220347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101220347 is an equidigital number, since it uses as much as digits as its factorization.

1212101220347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 1212101220347 its reverse (7430221012121), we get a palindrome (8642322232468).

The spelling of 1212101220347 in words is "one trillion, two hundred twelve billion, one hundred one million, two hundred twenty thousand, three hundred forty-seven".