22030381 has 2 divisors, whose sum is σ = 22030382. Its totient is φ = 22030380.

The previous prime is 22030369. The next prime is 22030391. The reversal of 22030381 is 18303022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 10017225 = 3466^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 22030381 - 2¹⁷ = 21899309 is a prime.

It is a super-2 number, since 2×22030381² = 970675374010322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22030301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015190 + 11015191.

It is an arithmetic number, because the mean of its divisors is an integer number (11015191).

Almost surely, 2^22030381 is an apocalyptic number.

It is an amenable number.

22030381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22030381 is an equidigital number, since it uses as much as digits as its factorization.

22030381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22030381 is about 4693.6532679779. The cubic root of 22030381 is about 280.3328567029.

The spelling of 22030381 in words is "twenty-two million, thirty thousand, three hundred eighty-one".