221010101000212 has 12 divisors (see below), whose sum is σ = 386768419691220. Its totient is φ = 110504838231296.

The previous prime is 221010101000207. The next prime is 221010101000219. The reversal of 221010101000212 is 212000101010122.

It can be written as a sum of positive squares in 2 ways, for example, as 59121274609296 + 161888826390916 = 7689036^2 + 12723554^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221010101000192 and 221010101000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010101000219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50712943 + ... + 54898294.

It is an arithmetic number, because the mean of its divisors is an integer number (32230701640935).

Almost surely, 2^{221010101000212} is an apocalyptic number.

It is an amenable number.

221010101000212 is a deficient number, since it is larger than the sum of its proper divisors (165758318691008).

221010101000212 is a wasteful number, since it uses less digits than its factorization.

221010101000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106134410 (or 106134408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221010101000212 its reverse (212000101010122), we get a palindrome (433010202010334).

The spelling of 221010101000212 in words is "two hundred twenty-one trillion, ten billion, one hundred one million, two hundred twelve", and thus it is an aban number.