2206210823 has 4 divisors (see below), whose sum is σ = 2206360560. Its totient is φ = 2206061088.

The previous prime is 2206210813. The next prime is 2206210837. The reversal of 2206210823 is 3280126022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3280126022 = 2 ⋅1640063011.

It is a cyclic number.

It is not a de Polignac number, because 2206210823 - 2¹² = 2206206727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2206210792 and 2206210801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206210813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50018 + ... + 83151.

It is an arithmetic number, because the mean of its divisors is an integer number (551590140).

Almost surely, 2^2206210823 is an apocalyptic number.

2206210823 is a deficient number, since it is larger than the sum of its proper divisors (149737).

2206210823 is a wasteful number, since it uses less digits than its factorization.

2206210823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149736.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2206210823 is about 46970.3185320262. The cubic root of 2206210823 is about 1301.8141974184.

Adding to 2206210823 its reverse (3280126022), we get a palindrome (5486336845).

The spelling of 2206210823 in words is "two billion, two hundred six million, two hundred ten thousand, eight hundred twenty-three".