1231222104443 has 2 divisors, whose sum is σ = 1231222104444. Its totient is φ = 1231222104442.

The previous prime is 1231222104377. The next prime is 1231222104451. The reversal of 1231222104443 is 3444012221321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231222104443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231222100443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615611052221 + 615611052222.

It is an arithmetic number, because the mean of its divisors is an integer number (615611052222).

Almost surely, 2^{1231222104443} is an apocalyptic number.

1231222104443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231222104443 is an equidigital number, since it uses as much as digits as its factorization.

1231222104443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1231222104443 its reverse (3444012221321), we get a palindrome (4675234325764).

The spelling of 1231222104443 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred four thousand, four hundred forty-three".