9210120001 has 2 divisors, whose sum is σ = 9210120002. Its totient is φ = 9210120000.

The previous prime is 9210119987. The next prime is 9210120019. The reversal of 9210120001 is 1000210129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6313097025 + 2897022976 = 79455^2 + 53824^2 .

It is a cyclic number.

It is not a de Polignac number, because 9210120001 - 2⁵ = 9210119969 is a prime.

It is not a weakly prime, because it can be changed into another prime (9210120091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4605060000 + 4605060001.

It is an arithmetic number, because the mean of its divisors is an integer number (4605060001).

Almost surely, 2^9210120001 is an apocalyptic number.

It is an amenable number.

9210120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9210120001 is an equidigital number, since it uses as much as digits as its factorization.

9210120001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 9210120001 is about 95969.3701188041. The cubic root of 9210120001 is about 2096.1471305514.

The spelling of 9210120001 in words is "nine billion, two hundred ten million, one hundred twenty thousand, one".