220022212 has 6 divisors (see below), whose sum is σ = 385038878. Its totient is φ = 110011104.

The previous prime is 220022207. The next prime is 220022233. The reversal of 220022212 is 212220022.

It can be written as a sum of positive squares in only one way, i.e., 198640836 + 21381376 = 14094^2 + 4624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220022192 and 220022201.

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 as a sum of consecutive naturals, namely, 27502773 + ... + 27502780.

Almost surely, 2^220022212 is an apocalyptic number.

It is an amenable number.

220022212 is a deficient number, since it is larger than the sum of its proper divisors (165016666).

220022212 is a wasteful number, since it uses less digits than its factorization.

220022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55005557 (or 55005555 counting only the distinct ones).

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

The square root of 220022212 is about 14833.1457216600. The cubic root of 220022212 is about 603.7013896082.

Adding to 220022212 its reverse (212220022), we get a palindrome (432242234).

It can be divided in two parts, 220022 and 212, that multiplied together give a palindrome (46644664).

The spelling of 220022212 in words is "two hundred twenty million, twenty-two thousand, two hundred twelve".