22221610 has 16 divisors (see below), whose sum is σ = 40080096. Its totient is φ = 8870608.

The previous prime is 22221599. The next prime is 22221649. The reversal of 22221610 is 1612222.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3657 + ... + 7603.

It is an arithmetic number, because the mean of its divisors is an integer number (2505006).

Almost surely, 2^22221610 is an apocalyptic number.

22221610 is a deficient number, since it is larger than the sum of its proper divisors (17858486).

22221610 is a wasteful number, since it uses less digits than its factorization.

22221610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 22221610 is about 4713.9802714903. The cubic root of 22221610 is about 281.1416399024.

Adding to 22221610 its reverse (1612222), we get a palindrome (23833832).

The spelling of 22221610 in words is "twenty-two million, two hundred twenty-one thousand, six hundred ten".