20012224 has 28 divisors (see below), whose sum is σ = 40562784. Its totient is φ = 9791744.

The previous prime is 20012219. The next prime is 20012261. The reversal of 20012224 is 42221002.

It is a super-3 number, since 3×20012224³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319 + ... + 6334.

Almost surely, 2^20012224 is an apocalyptic number.

It is an amenable number.

20012224 is an abundant number, since it is smaller than the sum of its proper divisors (20550560).

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

20012224 is an equidigital number, since it uses as much as digits as its factorization.

20012224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6712 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20012224 is about 4473.5024309818. The cubic root of 20012224 is about 271.4970521314.

Adding to 20012224 its reverse (42221002), we get a palindrome (62233226).

It can be divided in two parts, 2001 and 2224, that added together give a square (4225 = 65²).

The spelling of 20012224 in words is "twenty million, twelve thousand, two hundred twenty-four".