1212203315243 has 2 divisors, whose sum is σ = 1212203315244. Its totient is φ = 1212203315242.

The previous prime is 1212203315209. The next prime is 1212203315269. The reversal of 1212203315243 is 3425133022121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212203315243 - 2²² = 1212199120939 is a prime.

It is a super-2 number, since 2×1212203315243² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212203315203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606101657621 + 606101657622.

It is an arithmetic number, because the mean of its divisors is an integer number (606101657622).

Almost surely, 2^{1212203315243} is an apocalyptic number.

1212203315243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212203315243 is an equidigital number, since it uses as much as digits as its factorization.

1212203315243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1212203315243 its reverse (3425133022121), we get a palindrome (4637336337364).

The spelling of 1212203315243 in words is "one trillion, two hundred twelve billion, two hundred three million, three hundred fifteen thousand, two hundred forty-three".