201010121010073 has 2 divisors, whose sum is σ = 201010121010074. Its totient is φ = 201010121010072.

The previous prime is 201010121010053. The next prime is 201010121010107. The reversal of 201010121010073 is 370010121010102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182495026301184 + 18515094708889 = 13509072^2 + 4302917^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010121010073 - 2²¹ = 201010118912921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201010121010073.

It is not a weakly prime, because it can be changed into another prime (201010121010053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505060505036 + 100505060505037.

It is an arithmetic number, because the mean of its divisors is an integer number (100505060505037).

Almost surely, 2^{201010121010073} is an apocalyptic number.

It is an amenable number.

201010121010073 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010121010073 is an equidigital number, since it uses as much as digits as its factorization.

201010121010073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 201010121010073 its reverse (370010121010102), we get a palindrome (571020242020175).

The spelling of 201010121010073 in words is "two hundred one trillion, ten billion, one hundred twenty-one million, ten thousand, seventy-three".