1230123021047 has 2 divisors, whose sum is σ = 1230123021048. Its totient is φ = 1230123021046.

The previous prime is 1230123020993. The next prime is 1230123021067. The reversal of 1230123021047 is 7401203210321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230123021047 - 2¹² = 1230123016951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230123021067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061510523 + 615061510524.

It is an arithmetic number, because the mean of its divisors is an integer number (615061510524).

Almost surely, 2^{1230123021047} is an apocalyptic number.

1230123021047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230123021047 is an equidigital number, since it uses as much as digits as its factorization.

1230123021047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 1230123021047 its reverse (7401203210321), we get a palindrome (8631326231368).

The spelling of 1230123021047 in words is "one trillion, two hundred thirty billion, one hundred twenty-three million, twenty-one thousand, forty-seven".