220440012 has 24 divisors (see below), whose sum is σ = 553926576. Its totient is φ = 67827648.

The previous prime is 220439971. The next prime is 220440013. The reversal of 220440012 is 210044022.

220440012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220439973 and 220440000.

It is not an unprimeable number, because it can be changed into a prime (220440013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706383 + ... + 706694.

It is an arithmetic number, because the mean of its divisors is an integer number (23080274).

Almost surely, 2^220440012 is an apocalyptic number.

It is an amenable number.

220440012 is an abundant number, since it is smaller than the sum of its proper divisors (333486564).

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

220440012 is a wasteful number, since it uses less digits than its factorization.

220440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413097 (or 1413095 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 220440012 is about 14847.2223664900. Note that the first 3 decimals coincide. The cubic root of 220440012 is about 604.0832706853.

Adding to 220440012 its reverse (210044022), we get a palindrome (430484034).

The spelling of 220440012 in words is "two hundred twenty million, four hundred forty thousand, twelve".