221221122001222 has 8 divisors (see below), whose sum is σ = 379236209144976. Its totient is φ = 94809052286232.

The previous prime is 221221122001219. The next prime is 221221122001283. The reversal of 221221122001222 is 222100221122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221221122001193 and 221221122001202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7900754357173 + ... + 7900754357200.

It is an arithmetic number, because the mean of its divisors is an integer number (47404526143122).

Almost surely, 2^{221221122001222} is an apocalyptic number.

221221122001222 is a deficient number, since it is larger than the sum of its proper divisors (158015087143754).

221221122001222 is a wasteful number, since it uses less digits than its factorization.

221221122001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15801508714382.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221221122001222 its reverse (222100221122122), we get a palindrome (443321343123344).

The spelling of 221221122001222 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred twenty-two million, one thousand, two hundred twenty-two".