221001220000222 has 16 divisors (see below), whose sum is σ = 346812500930112. Its totient is φ = 105511739697280.

The previous prime is 221001220000207. The next prime is 221001220000243. The reversal of 221001220000222 is 222000022100122.

It is a junction number, because it is equal to n+sod(n) for n = 221001220000196 and 221001220000205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28671664543 + ... + 28671672250.

It is an arithmetic number, because the mean of its divisors is an integer number (21675781308132).

Almost surely, 2^{221001220000222} is an apocalyptic number.

221001220000222 is a deficient number, since it is larger than the sum of its proper divisors (125811280929890).

221001220000222 is a wasteful number, since it uses less digits than its factorization.

221001220000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57343336883.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221001220000222 its reverse (222000022100122), we get a palindrome (443001242100344).

The spelling of 221001220000222 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, two hundred twenty-two", and thus it is an aban number.