22051369 has 2 divisors, whose sum is σ = 22051370. Its totient is φ = 22051368.

The previous prime is 22051331. The next prime is 22051417. The reversal of 22051369 is 96315022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17264025 + 4787344 = 4155^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 22051369 - 2²¹ = 19954217 is a prime.

It is a super-2 number, since 2×22051369² = 972525749548322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22051069) 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, 11025684 + 11025685.

It is an arithmetic number, because the mean of its divisors is an integer number (11025685).

Almost surely, 2^22051369 is an apocalyptic number.

It is an amenable number.

22051369 is a deficient number, since it is larger than the sum of its proper divisors (1).

22051369 is an equidigital number, since it uses as much as digits as its factorization.

22051369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 22051369 is about 4695.8885208233. Note that the first 3 decimals coincide. The cubic root of 22051369 is about 280.4218513594.

The spelling of 22051369 in words is "twenty-two million, fifty-one thousand, three hundred sixty-nine".