20223223213 has 4 divisors (see below), whose sum is σ = 20244807100. Its totient is φ = 20201639328.

The previous prime is 20223223169. The next prime is 20223223243. The reversal of 20223223213 is 31232232202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 980817124 + 19242406089 = 31318^2 + 138717^2 .

It is a cyclic number.

It is not a de Polignac number, because 20223223213 - 2³³ = 11633288621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223223243) 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, 10790538 + ... + 10792411.

It is an arithmetic number, because the mean of its divisors is an integer number (5061201775).

Almost surely, 2^20223223213 is an apocalyptic number.

It is an amenable number.

20223223213 is a deficient number, since it is larger than the sum of its proper divisors (21583887).

20223223213 is an equidigital number, since it uses as much as digits as its factorization.

20223223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21583886.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20223223213 its reverse (31232232202), we get a palindrome (51455455415).

The spelling of 20223223213 in words is "twenty billion, two hundred twenty-three million, two hundred twenty-three thousand, two hundred thirteen".