220312012 has 6 divisors (see below), whose sum is σ = 385546028. Its totient is φ = 110156004.

The previous prime is 220312003. The next prime is 220312019. The reversal of 220312012 is 210213022.

It is a junction number, because it is equal to n+sod(n) for n = 220311983 and 220312001.

It is not an unprimeable number, because it can be changed into a prime (220312019) by changing a digit.

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 as a sum of consecutive naturals, namely, 27538998 + ... + 27539005.

Almost surely, 2^220312012 is an apocalyptic number.

It is an amenable number.

220312012 is a deficient number, since it is larger than the sum of its proper divisors (165234016).

220312012 is a wasteful number, since it uses less digits than its factorization.

220312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55078007 (or 55078005 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 220312012 is about 14842.9111699828. The cubic root of 220312012 is about 603.9663263539.

Adding to 220312012 its reverse (210213022), we get a palindrome (430525034).

The spelling of 220312012 in words is "two hundred twenty million, three hundred twelve thousand, twelve".