2221010212 has 6 divisors (see below), whose sum is σ = 3886767878. Its totient is φ = 1110505104.

The previous prime is 2221010189. The next prime is 2221010257. The reversal of 2221010212 is 2120101222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2052633636 + 168376576 = 45306^2 + 12976^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2221010192 and 2221010201.

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, 277626273 + ... + 277626280.

Almost surely, 2^2221010212 is an apocalyptic number.

It is an amenable number.

2221010212 is a deficient number, since it is larger than the sum of its proper divisors (1665757666).

2221010212 is a wasteful number, since it uses less digits than its factorization.

2221010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555252557 (or 555252555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2221010212 is about 47127.5950160837. The cubic root of 2221010212 is about 1304.7185942654.

Adding to 2221010212 its reverse (2120101222), we get a palindrome (4341111434).

It can be divided in two parts, 2221010 and 212, that added together give a palindrome (2221222).

The spelling of 2221010212 in words is "two billion, two hundred twenty-one million, ten thousand, two hundred twelve".