10210221209 has 4 divisors (see below), whose sum is σ = 10277838720. Its totient is φ = 10142603700.

The previous prime is 10210221193. The next prime is 10210221211. The reversal of 10210221209 is 90212201201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90212201201 = 85829 ⋅1051069.

It is a cyclic number.

It is not a de Polignac number, because 10210221209 - 2⁴ = 10210221193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10210221239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33808529 + ... + 33808830.

It is an arithmetic number, because the mean of its divisors is an integer number (2569459680).

Almost surely, 2^10210221209 is an apocalyptic number.

It is an amenable number.

10210221209 is a deficient number, since it is larger than the sum of its proper divisors (67617511).

10210221209 is an equidigital number, since it uses as much as digits as its factorization.

10210221209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67617510.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 10210221209 in words is "ten billion, two hundred ten million, two hundred twenty-one thousand, two hundred nine".