22202249 has 2 divisors, whose sum is σ = 22202250. Its totient is φ = 22202248.
The previous prime is 22202209. The next prime is 22202261. The reversal of 22202249 is 94220222.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 16345849 + 5856400 = 4043^2 + 2420^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-22202249 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (22202209) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101124 + 11101125.
It is an arithmetic number, because the mean of its divisors is an integer number (11101125).
Almost surely, 222202249 is an apocalyptic number.
It is an amenable number.
22202249 is a deficient number, since it is larger than the sum of its proper divisors (1).
22202249 is an equidigital number, since it uses as much as digits as its factorization.
22202249 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1152, while the sum is 23.
The square root of 22202249 is about 4711.9262515451. The cubic root of 22202249 is about 281.0599661791.
The spelling of 22202249 in words is "twenty-two million, two hundred two thousand, two hundred forty-nine".
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