20113223210 has 8 divisors (see below), whose sum is σ = 36203801796. Its totient is φ = 8045289280.

The previous prime is 20113223183. The next prime is 20113223213. The reversal of 20113223210 is 1232231102.

It can be written as a sum of positive squares in 2 ways, for example, as 19552149241 + 561073969 = 139829^2 + 23687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20113223213) 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, 1005661151 + ... + 1005661170.

Almost surely, 2^20113223210 is an apocalyptic number.

20113223210 is a deficient number, since it is larger than the sum of its proper divisors (16090578586).

20113223210 is a wasteful number, since it uses less digits than its factorization.

20113223210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011322328.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20113223210 its reverse (1232231102), we get a palindrome (21345454312).

The spelling of 20113223210 in words is "twenty billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred ten".