10001211973 has 2 divisors, whose sum is σ = 10001211974. Its totient is φ = 10001211972.

The previous prime is 10001211967. The next prime is 10001212057. The reversal of 10001211973 is 37911210001.

10001211973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6588081889 + 3413130084 = 81167^2 + 58422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001211973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001212973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000605986 + 5000605987.

It is an arithmetic number, because the mean of its divisors is an integer number (5000605987).

Almost surely, 2^10001211973 is an apocalyptic number.

It is an amenable number.

10001211973 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001211973 is an equidigital number, since it uses as much as digits as its factorization.

10001211973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

Adding to 10001211973 its reverse (37911210001), we get a palindrome (47912421974).

The spelling of 10001211973 in words is "ten billion, one million, two hundred eleven thousand, nine hundred seventy-three".