201010101009973 has 2 divisors, whose sum is σ = 201010101009974. Its totient is φ = 201010101009972.

The previous prime is 201010101009947. The next prime is 201010101010027. The reversal of 201010101009973 is 379900101010102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102168287955889 + 98841813054084 = 10107833^2 + 9941922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201010101009973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201010101009173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505050504986 + 100505050504987.

It is an arithmetic number, because the mean of its divisors is an integer number (100505050504987).

Almost surely, 2^{201010101009973} is an apocalyptic number.

It is an amenable number.

201010101009973 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010101009973 is an equidigital number, since it uses as much as digits as its factorization.

201010101009973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 34.

The spelling of 201010101009973 in words is "two hundred one trillion, ten billion, one hundred one million, nine thousand, nine hundred seventy-three".