20340221224 has 8 divisors (see below), whose sum is σ = 38137914810. Its totient is φ = 10170110608.

The previous prime is 20340221203. The next prime is 20340221263. The reversal of 20340221224 is 42212204302.

It can be written as a sum of positive squares in only one way, i.e., 17771556100 + 2568665124 = 133310^2 + 50682^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20340221195 and 20340221204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271263819 + ... + 1271263834.

Almost surely, 2^20340221224 is an apocalyptic number.

It is an amenable number.

20340221224 is a deficient number, since it is larger than the sum of its proper divisors (17797693586).

20340221224 is a wasteful number, since it uses less digits than its factorization.

20340221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542527659 (or 2542527655 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20340221224 its reverse (42212204302), we get a palindrome (62552425526).

The spelling of 20340221224 in words is "twenty billion, three hundred forty million, two hundred twenty-one thousand, two hundred twenty-four".