209106954223 has 2 divisors, whose sum is σ = 209106954224. Its totient is φ = 209106954222.

The previous prime is 209106954193. The next prime is 209106954253. The reversal of 209106954223 is 322459601902.

It is a balanced prime because it is at equal distance from previous prime (209106954193) and next prime (209106954253).

It is a cyclic number.

It is not a de Polignac number, because 209106954223 - 2⁹ = 209106953711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 209106954223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209106954253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104553477111 + 104553477112.

It is an arithmetic number, because the mean of its divisors is an integer number (104553477112).

Almost surely, 2^209106954223 is an apocalyptic number.

209106954223 is a deficient number, since it is larger than the sum of its proper divisors (1).

209106954223 is an equidigital number, since it uses as much as digits as its factorization.

209106954223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 209106954223 in words is "two hundred nine billion, one hundred six million, nine hundred fifty-four thousand, two hundred twenty-three".