220222220212 has 6 divisors (see below), whose sum is σ = 385388885378. Its totient is φ = 110111110104.

The previous prime is 220222220209. The next prime is 220222220221. The reversal of 220222220212 is 212022222022.

It can be written as a sum of positive squares in only one way, i.e., 161150862096 + 59071358116 = 401436^2 + 243046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220222220212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527777523 + ... + 27527777530.

Almost surely, 2^220222220212 is an apocalyptic number.

It is an amenable number.

220222220212 is a deficient number, since it is larger than the sum of its proper divisors (165166665166).

220222220212 is a wasteful number, since it uses less digits than its factorization.

220222220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55055555057 (or 55055555055 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 220222220212 its reverse (212022222022), we get a palindrome (432244442234).

The spelling of 220222220212 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twelve".