4120021302209 has 2 divisors, whose sum is σ = 4120021302210. Its totient is φ = 4120021302208.

The previous prime is 4120021302179. The next prime is 4120021302251. The reversal of 4120021302209 is 9022031200214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4039235746225 + 80785555984 = 2009785^2 + 284228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4120021302209 is a prime.

It is not a weakly prime, because it can be changed into another prime (4120021302269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060010651104 + 2060010651105.

It is an arithmetic number, because the mean of its divisors is an integer number (2060010651105).

Almost surely, 2^{4120021302209} is an apocalyptic number.

It is an amenable number.

4120021302209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4120021302209 is an equidigital number, since it uses as much as digits as its factorization.

4120021302209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 4120021302209 in words is "four trillion, one hundred twenty billion, twenty-one million, three hundred two thousand, two hundred nine".