22194961 has 2 divisors, whose sum is σ = 22194962. Its totient is φ = 22194960.

The previous prime is 22194943. The next prime is 22194989. The reversal of 22194961 is 16949122.

22194961 is nontrivially palindromic in base 8.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19492225 + 2702736 = 4415^2 + 1644^2 .

It is a cyclic number.

It is not a de Polignac number, because 22194961 - 2⁵ = 22194929 is a prime.

It is not a weakly prime, because it can be changed into another prime (22194941) 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 as a sum of consecutive naturals, namely, 11097480 + 11097481.

It is an arithmetic number, because the mean of its divisors is an integer number (11097481).

Almost surely, 2^22194961 is an apocalyptic number.

It is an amenable number.

22194961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22194961 is an equidigital number, since it uses as much as digits as its factorization.

22194961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 22194961 is about 4711.1528313142. The cubic root of 22194961 is about 281.0292096973.

The spelling of 22194961 in words is "twenty-two million, one hundred ninety-four thousand, nine hundred sixty-one".