22019229 has 8 divisors (see below), whose sum is σ = 32621120. Its totient is φ = 14679468.

The previous prime is 22019219. The next prime is 22019251. The reversal of 22019229 is 92291022.

It is not a de Polignac number, because 22019229 - 2⁵ = 22019197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 815527 = 22019229 / (2 + 2 + 0 + 1 + 9 + 2 + 2 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22019219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407737 + ... + 407790.

It is an arithmetic number, because the mean of its divisors is an integer number (4077640).

Almost surely, 2^22019229 is an apocalyptic number.

It is an amenable number.

22019229 is a deficient number, since it is larger than the sum of its proper divisors (10601891).

22019229 is an equidigital number, since it uses as much as digits as its factorization.

22019229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815536 (or 815530 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 22019229 is about 4692.4651303979. The cubic root of 22019229 is about 280.2855462836.

The spelling of 22019229 in words is "twenty-two million, nineteen thousand, two hundred twenty-nine".