22221006 has 32 divisors (see below), whose sum is σ = 47443968. Its totient is φ = 6913920.

The previous prime is 22220987. The next prime is 22221007. The reversal of 22221006 is 60012222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12531 + ... + 14193.

It is an arithmetic number, because the mean of its divisors is an integer number (1482624).

Almost surely, 2^22221006 is an apocalyptic number.

22221006 is an abundant number, since it is smaller than the sum of its proper divisors (25222962).

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

22221006 is a wasteful number, since it uses less digits than its factorization.

22221006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22221006 is about 4713.9162062981. The cubic root of 22221006 is about 281.1390926659.

Adding to 22221006 its reverse (60012222), we get a palindrome (82233228).

The spelling of 22221006 in words is "twenty-two million, two hundred twenty-one thousand, six".