22607221 has 8 divisors (see below), whose sum is σ = 27824384. Its totient is φ = 17886960.

The previous prime is 22607219. The next prime is 22607231. The reversal of 22607221 is 12270622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22607221 - 2¹ = 22607219 is a prime.

It is a super-2 number, since 2×22607221² = 1022172882685682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22607192 and 22607201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22607231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124125 + ... + 124306.

It is an arithmetic number, because the mean of its divisors is an integer number (3478048).

Almost surely, 2^22607221 is an apocalyptic number.

It is an amenable number.

22607221 is a deficient number, since it is larger than the sum of its proper divisors (5217163).

22607221 is a wasteful number, since it uses less digits than its factorization.

22607221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248451.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 22607221 is about 4754.7051433291. The cubic root of 22607221 is about 282.7585374348.

Adding to 22607221 its reverse (12270622), we get a palindrome (34877843).

The spelling of 22607221 in words is "twenty-two million, six hundred seven thousand, two hundred twenty-one".