221011101201222 has 32 divisors (see below), whose sum is σ = 491146917811200. Its totient is φ = 73668696462504.

The previous prime is 221011101201211. The next prime is 221011101201257. The reversal of 221011101201222 is 222102101110122.

221011101201222 is a `hidden beast` number, since 2 + 210 + 1 + 110 + 120 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221011101201195 and 221011101201204.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 44001198 + ... + 48766049.

It is an arithmetic number, because the mean of its divisors is an integer number (15348341181600).

Almost surely, 2^{221011101201222} is an apocalyptic number.

221011101201222 is an abundant number, since it is smaller than the sum of its proper divisors (270135816609978).

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

221011101201222 is a wasteful number, since it uses less digits than its factorization.

221011101201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92811377 (or 92811371 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221011101201222 its reverse (222102101110122), we get a palindrome (443113202311344).

The spelling of 221011101201222 in words is "two hundred twenty-one trillion, eleven billion, one hundred one million, two hundred one thousand, two hundred twenty-two".