22234477 has 4 divisors (see below), whose sum is σ = 22258080. Its totient is φ = 22210876.

The previous prime is 22234463. The next prime is 22234481. The reversal of 22234477 is 77443222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77443222 = 2 ⋅38721611.

It is a cyclic number.

It is not a de Polignac number, because 22234477 - 2⁷ = 22234349 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22234417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10327 + ... + 12292.

It is an arithmetic number, because the mean of its divisors is an integer number (5564520).

Almost surely, 2^22234477 is an apocalyptic number.

It is an amenable number.

22234477 is a deficient number, since it is larger than the sum of its proper divisors (23603).

22234477 is an equidigital number, since it uses as much as digits as its factorization.

22234477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23602.

The product of its digits is 18816, while the sum is 31.

The square root of 22234477 is about 4715.3448442293. The cubic root of 22234477 is about 281.1958926696.

Subtracting from 22234477 its sum of digits (31), we obtain a triangular number (22234446 = T₆₆₆₈).

Adding to 22234477 its reverse (77443222), we get a palindrome (99677699).

The spelling of 22234477 in words is "twenty-two million, two hundred thirty-four thousand, four hundred seventy-seven".