1045221949997 has 2 divisors, whose sum is σ = 1045221949998. Its totient is φ = 1045221949996.

The previous prime is 1045221949979. The next prime is 1045221950021. The reversal of 1045221949997 is 7999491225401.

It is a happy number.

Together with previous prime (1045221949979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624651541801 + 420570408196 = 790349^2 + 648514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045221949997 - 2⁸ = 1045221949741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045221949907) 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, 522610974998 + 522610974999.

It is an arithmetic number, because the mean of its divisors is an integer number (522610974999).

Almost surely, 2^{1045221949997} is an apocalyptic number.

It is an amenable number.

1045221949997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045221949997 is an equidigital number, since it uses as much as digits as its factorization.

1045221949997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 1045221949997 in words is "one trillion, forty-five billion, two hundred twenty-one million, nine hundred forty-nine thousand, nine hundred ninety-seven".