1228265995001 has 2 divisors, whose sum is σ = 1228265995002. Its totient is φ = 1228265995000.

The previous prime is 1228265994997. The next prime is 1228265995049. The reversal of 1228265995001 is 1005995628221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1161704574976 + 66561420025 = 1077824^2 + 257995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228265995001 - 2² = 1228265994997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228265995051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614132997500 + 614132997501.

It is an arithmetic number, because the mean of its divisors is an integer number (614132997501).

Almost surely, 2^{1228265995001} is an apocalyptic number.

It is an amenable number.

1228265995001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228265995001 is an equidigital number, since it uses as much as digits as its factorization.

1228265995001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 1228265995001 in words is "one trillion, two hundred twenty-eight billion, two hundred sixty-five million, nine hundred ninety-five thousand, one".