22123477 has 8 divisors (see below), whose sum is σ = 23996952. Its totient is φ = 20313600.

The previous prime is 22123421. The next prime is 22123481. The reversal of 22123477 is 77432122.

It can be written as a sum of positive squares in 4 ways, for example, as 2842596 + 19280881 = 1686^2 + 4391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22123477 - 2⁷ = 22123349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123177) 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 7 ways as a sum of consecutive naturals, for example, 15174 + ... + 16567.

It is an arithmetic number, because the mean of its divisors is an integer number (2999619).

Almost surely, 2^22123477 is an apocalyptic number.

It is an amenable number.

22123477 is a deficient number, since it is larger than the sum of its proper divisors (1873475).

22123477 is a wasteful number, since it uses less digits than its factorization.

22123477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31799.

The product of its digits is 4704, while the sum is 28.

The square root of 22123477 is about 4703.5600346971. The cubic root of 22123477 is about 280.7271787110.

Adding to 22123477 its reverse (77432122), we get a palindrome (99555599).

The spelling of 22123477 in words is "twenty-two million, one hundred twenty-three thousand, four hundred seventy-seven".