210022011218909 has 2 divisors, whose sum is σ = 210022011218910. Its totient is φ = 210022011218908.

The previous prime is 210022011218893. The next prime is 210022011218963. The reversal of 210022011218909 is 909812110220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207882242006884 + 2139769212025 = 14418122^2 + 1462795^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022011218909 - 2⁴ = 210022011218893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022011218009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011005609454 + 105011005609455.

It is an arithmetic number, because the mean of its divisors is an integer number (105011005609455).

Almost surely, 2^{210022011218909} is an apocalyptic number.

It is an amenable number.

210022011218909 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022011218909 is an equidigital number, since it uses as much as digits as its factorization.

210022011218909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 210022011218909 in words is "two hundred ten trillion, twenty-two billion, eleven million, two hundred eighteen thousand, nine hundred nine".