20440230212 has 24 divisors (see below), whose sum is σ = 36203539680. Its totient is φ = 10096560320.

The previous prime is 20440230199. The next prime is 20440230227. The reversal of 20440230212 is 21203204402.

It is a super-2 number, since 2×20440230212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398387 + ... + 446757.

It is an arithmetic number, because the mean of its divisors is an integer number (1508480820).

Almost surely, 2^20440230212 is an apocalyptic number.

It is an amenable number.

20440230212 is a deficient number, since it is larger than the sum of its proper divisors (15763309468).

20440230212 is a wasteful number, since it uses less digits than its factorization.

20440230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49651 (or 49649 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20440230212 its reverse (21203204402), we get a palindrome (41643434614).

The spelling of 20440230212 in words is "twenty billion, four hundred forty million, two hundred thirty thousand, two hundred twelve".