22151443 has 2 divisors, whose sum is σ = 22151444. Its totient is φ = 22151442.

The previous prime is 22151431. The next prime is 22151449. The reversal of 22151443 is 34415122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22151443 - 2⁵ = 22151411 is a prime.

It is not a weakly prime, because it can be changed into another prime (22151449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11075721 + 11075722.

It is an arithmetic number, because the mean of its divisors is an integer number (11075722).

Almost surely, 2^22151443 is an apocalyptic number.

22151443 is a deficient number, since it is larger than the sum of its proper divisors (1).

22151443 is an equidigital number, since it uses as much as digits as its factorization.

22151443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 22151443 is about 4706.5319503855. The cubic root of 22151443 is about 280.8454167643.

Adding to 22151443 its reverse (34415122), we get a palindrome (56566565).

The spelling of 22151443 in words is "twenty-two million, one hundred fifty-one thousand, four hundred forty-three".