221212102100222 has 16 divisors (see below), whose sum is σ = 338126310526752. Its totient is φ = 108503917572960.

The previous prime is 221212102100189. The next prime is 221212102100233. The reversal of 221212102100222 is 222001201212122.

It is a junction number, because it is equal to n+sod(n) for n = 221212102100194 and 221212102100203.

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, 145653029 + ... + 147163952.

It is an arithmetic number, because the mean of its divisors is an integer number (21132894407922).

Almost surely, 2^{221212102100222} is an apocalyptic number.

221212102100222 is a deficient number, since it is larger than the sum of its proper divisors (116914208426530).

221212102100222 is a wasteful number, since it uses less digits than its factorization.

221212102100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292824163.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221212102100222 its reverse (222001201212122), we get a palindrome (443213303312344).

The spelling of 221212102100222 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred two million, one hundred thousand, two hundred twenty-two".