221112011001222 has 64 divisors (see below), whose sum is σ = 536067814867200. Its totient is φ = 66998802536640.

The previous prime is 221112011001221. The next prime is 221112011001227. The reversal of 221112011001222 is 222100110211122.

221112011001222 is a `hidden beast` number, since 2 + 211 + 120 + 110 + 0 + 1 + 222 = 666.

221112011001222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 221112011001195 and 221112011001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112011001221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5197383 + ... + 21661874.

It is an arithmetic number, because the mean of its divisors is an integer number (8376059607300).

Almost surely, 2^{221112011001222} is an apocalyptic number.

221112011001222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221112011001222 is an abundant number, since it is smaller than the sum of its proper divisors (314955803865978).

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

221112011001222 is a wasteful number, since it uses less digits than its factorization.

221112011001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26873138 (or 26873132 counting only the distinct ones).

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

Adding to 221112011001222 its reverse (222100110211122), we get a palindrome (443212121212344).

The spelling of 221112011001222 in words is "two hundred twenty-one trillion, one hundred twelve billion, eleven million, one thousand, two hundred twenty-two".