20016120224 has 36 divisors (see below), whose sum is σ = 40344604146. Its totient is φ = 9775285632.

The previous prime is 20016120217. The next prime is 20016120233. The reversal of 20016120224 is 42202161002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19171171600 + 844948624 = 138460^2 + 29068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20016120196 and 20016120205.

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 5 ways as a sum of consecutive naturals, for example, 109979 + ... + 228314.

Almost surely, 2^20016120224 is an apocalyptic number.

It is an amenable number.

20016120224 is an abundant number, since it is smaller than the sum of its proper divisors (20328483922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20016120224 is an equidigital number, since it uses as much as digits as its factorization.

20016120224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338389 (or 338338 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20016120224 its reverse (42202161002), we get a palindrome (62218281226).

The spelling of 20016120224 in words is "twenty billion, sixteen million, one hundred twenty thousand, two hundred twenty-four".