1001928201121 has 2 divisors, whose sum is σ = 1001928201122. Its totient is φ = 1001928201120.

The previous prime is 1001928201037. The next prime is 1001928201133. The reversal of 1001928201121 is 1211028291001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547139816721 + 454788384400 = 739689^2 + 674380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001928201121 - 2⁷ = 1001928200993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001928201121.

It is not a weakly prime, because it can be changed into another prime (1001928201151) 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, 500964100560 + 500964100561.

It is an arithmetic number, because the mean of its divisors is an integer number (500964100561).

Almost surely, 2^{1001928201121} is an apocalyptic number.

It is an amenable number.

1001928201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001928201121 is an equidigital number, since it uses as much as digits as its factorization.

1001928201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 1001928201121 in words is "one trillion, one billion, nine hundred twenty-eight million, two hundred one thousand, one hundred twenty-one".