22402211 has 4 divisors (see below), whose sum is σ = 24125472. Its totient is φ = 20678952.

The previous prime is 22402169. The next prime is 22402217. The reversal of 22402211 is 11220422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11220422 = 2 ⋅5610211.

It is a cyclic number.

It is not a de Polignac number, because 22402211 - 2²² = 18207907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22402217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861611 + ... + 861636.

It is an arithmetic number, because the mean of its divisors is an integer number (6031368).

Almost surely, 2^22402211 is an apocalyptic number.

22402211 is a deficient number, since it is larger than the sum of its proper divisors (1723261).

22402211 is a wasteful number, since it uses less digits than its factorization.

22402211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723260.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22402211 is about 4733.0974002232. The cubic root of 22402211 is about 281.9012237260.

Adding to 22402211 its reverse (11220422), we get a palindrome (33622633).

The spelling of 22402211 in words is "twenty-two million, four hundred two thousand, two hundred eleven".