221002211010212 has 6 divisors (see below), whose sum is σ = 386753869267878. Its totient is φ = 110501105505104.

The previous prime is 221002211010083. The next prime is 221002211010241. The reversal of 221002211010212 is 212010112200122.

It can be written as a sum of positive squares in only one way, i.e., 211944855922276 + 9057355087936 = 14558326^2 + 3009544^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27625276376273 + ... + 27625276376280.

It is an arithmetic number, because the mean of its divisors is an integer number (64458978211313).

Almost surely, 2^{221002211010212} is an apocalyptic number.

It is an amenable number.

221002211010212 is a deficient number, since it is larger than the sum of its proper divisors (165751658257666).

221002211010212 is a wasteful number, since it uses less digits than its factorization.

221002211010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55250552752557 (or 55250552752555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221002211010212 its reverse (212010112200122), we get a palindrome (433012323210334).

The spelling of 221002211010212 in words is "two hundred twenty-one trillion, two billion, two hundred eleven million, ten thousand, two hundred twelve".