10001021551201 has 2 divisors, whose sum is σ = 10001021551202. Its totient is φ = 10001021551200.

The previous prime is 10001021551181. The next prime is 10001021551243. The reversal of 10001021551201 is 10215512010001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9302378000400 + 698643550801 = 3049980^2 + 835849^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001021551201 - 2²³ = 10001013162593 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001021551271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000510775600 + 5000510775601.

It is an arithmetic number, because the mean of its divisors is an integer number (5000510775601).

Almost surely, 2^{10001021551201} is an apocalyptic number.

It is an amenable number.

10001021551201 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001021551201 is an equidigital number, since it uses as much as digits as its factorization.

10001021551201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 19.

Adding to 10001021551201 its reverse (10215512010001), we get a palindrome (20216533561202).

The spelling of 10001021551201 in words is "ten trillion, one billion, twenty-one million, five hundred fifty-one thousand, two hundred one".