210120012120001 has 2 divisors, whose sum is σ = 210120012120002. Its totient is φ = 210120012120000.

The previous prime is 210120012119989. The next prime is 210120012120017. The reversal of 210120012120001 is 100021210021012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204982645356225 + 5137366763776 = 14317215^2 + 2266576^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120012120001 - 2⁹ = 210120012119489 is a prime.

It is not a weakly prime, because it can be changed into another prime (210120012520001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060006060000 + 105060006060001.

It is an arithmetic number, because the mean of its divisors is an integer number (105060006060001).

Almost surely, 2^{210120012120001} is an apocalyptic number.

It is an amenable number.

210120012120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120012120001 is an equidigital number, since it uses as much as digits as its factorization.

210120012120001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210120012120001 its reverse (100021210021012), we get a palindrome (310141222141013).

The spelling of 210120012120001 in words is "two hundred ten trillion, one hundred twenty billion, twelve million, one hundred twenty thousand, one".