1204894954721 has 2 divisors, whose sum is σ = 1204894954722. Its totient is φ = 1204894954720.

The previous prime is 1204894954699. The next prime is 1204894954777. The reversal of 1204894954721 is 1274594984021.

It is an a-pointer prime, because the next prime (1204894954777) can be obtained adding 1204894954721 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 761891562496 + 443003392225 = 872864^2 + 665585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204894954721 - 2¹⁰ = 1204894953697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1204894954121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602447477360 + 602447477361.

It is an arithmetic number, because the mean of its divisors is an integer number (602447477361).

Almost surely, 2^{1204894954721} is an apocalyptic number.

It is an amenable number.

1204894954721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204894954721 is an equidigital number, since it uses as much as digits as its factorization.

1204894954721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 1204894954721 in words is "one trillion, two hundred four billion, eight hundred ninety-four million, nine hundred fifty-four thousand, seven hundred twenty-one".