106221222 has 96 divisors (see below), whose sum is σ = 252315648. Its totient is φ = 32205888.

The previous prime is 106221209. The next prime is 106221259. The reversal of 106221222 is 222122601.

106221222 is a `hidden beast` number, since 10 + 622 + 12 + 22 = 666.

It is a super-2 number, since 2×106221222² = 22565896006346568, which contains 22 as substring.

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 = 106221195 and 106221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1031223 + ... + 1031325.

It is an arithmetic number, because the mean of its divisors is an integer number (2628288).

Almost surely, 2^106221222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 106221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126157824).

106221222 is an abundant number, since it is smaller than the sum of its proper divisors (146094426).

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

106221222 is a wasteful number, since it uses less digits than its factorization.

106221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 106221222 is about 10306.3680314648. The cubic root of 106221222 is about 473.5913531861.

Adding to 106221222 its reverse (222122601), we get a palindrome (328343823).

The spelling of 106221222 in words is "one hundred six million, two hundred twenty-one thousand, two hundred twenty-two".