221011221201222 has 8 divisors (see below), whose sum is σ = 442022442402456. Its totient is φ = 73670407067072.

The previous prime is 221011221201191. The next prime is 221011221201229. The reversal of 221011221201222 is 222102122110122.

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

221011221201222 is an admirable number.

It is a super-2 number, since 2×221011221201222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011221201229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18417601766763 + ... + 18417601766774.

It is an arithmetic number, because the mean of its divisors is an integer number (55252805300307).

Almost surely, 2^{221011221201222} is an apocalyptic number.

221011221201222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221011221201222 is a wasteful number, since it uses less digits than its factorization.

221011221201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36835203533542.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221011221201222 its reverse (222102122110122), we get a palindrome (443113343311344).

The spelling of 221011221201222 in words is "two hundred twenty-one trillion, eleven billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-two".