22221696 has 96 divisors (see below), whose sum is σ = 68721480. Its totient is φ = 6343680.

The previous prime is 22221691. The next prime is 22221707. The reversal of 22221696 is 69612222.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18226 + ... + 19406.

Almost surely, 2^22221696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34360740).

22221696 is an abundant number, since it is smaller than the sum of its proper divisors (46499784).

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

22221696 is a wasteful number, since it uses less digits than its factorization.

22221696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1193 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 22221696 is about 4713.9893932846. The cubic root of 22221696 is about 281.1420025847.

The spelling of 22221696 in words is "twenty-two million, two hundred twenty-one thousand, six hundred ninety-six".