220331212 has 24 divisors (see below), whose sum is σ = 408612960. Its totient is φ = 103770240.

The previous prime is 220331173. The next prime is 220331227. The reversal of 220331212 is 212133022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18408 + ... + 27919.

It is an arithmetic number, because the mean of its divisors is an integer number (17025540).

Almost surely, 2^220331212 is an apocalyptic number.

It is an amenable number.

220331212 is a deficient number, since it is larger than the sum of its proper divisors (188281748).

220331212 is a wasteful number, since it uses less digits than its factorization.

220331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46401 (or 46399 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220331212 is about 14843.5579292837. The cubic root of 220331212 is about 603.9838708907.

Adding to 220331212 its reverse (212133022), we get a palindrome (432464234).

The spelling of 220331212 in words is "two hundred twenty million, three hundred thirty-one thousand, two hundred twelve".