22155123 has 8 divisors (see below), whose sum is σ = 29722048. Its totient is φ = 14679144.

The previous prime is 22155103. The next prime is 22155127. The reversal of 22155123 is 32155122.

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

It is not a de Polignac number, because 22155123 - 2⁶ = 22155059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22155123.

It is not an unprimeable number, because it can be changed into a prime (22155127) 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, 22165 + ... + 23142.

It is an arithmetic number, because the mean of its divisors is an integer number (3715256).

Almost surely, 2^22155123 is an apocalyptic number.

22155123 is a deficient number, since it is larger than the sum of its proper divisors (7566925).

22155123 is a wasteful number, since it uses less digits than its factorization.

22155123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45473.

The product of its digits is 600, while the sum is 21.

The square root of 22155123 is about 4706.9228801840. The cubic root of 22155123 is about 280.8609681050.

Subtracting 22155123 from its reverse (32155122), we obtain a palindrome (9999999).

The spelling of 22155123 in words is "twenty-two million, one hundred fifty-five thousand, one hundred twenty-three".