20211223304 has 16 divisors (see below), whose sum is σ = 37897559100. Its totient is φ = 10105207552.

The previous prime is 20211223273. The next prime is 20211223309. The reversal of 20211223304 is 40332211202.

It can be written as a sum of positive squares in 2 ways, for example, as 14940172900 + 5271050404 = 122230^2 + 72602^2 .

It is not an unprimeable number, because it can be changed into a prime (20211223309) 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, 336212 + ... + 391740.

Almost surely, 2^20211223304 is an apocalyptic number.

It is an amenable number.

20211223304 is a deficient number, since it is larger than the sum of its proper divisors (17686335796).

20211223304 is a wasteful number, since it uses less digits than its factorization.

20211223304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101032 (or 101028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20211223304 its reverse (40332211202), we get a palindrome (60543434506).

The spelling of 20211223304 in words is "twenty billion, two hundred eleven million, two hundred twenty-three thousand, three hundred four".