22155440134 has 4 divisors (see below), whose sum is σ = 33233160204. Its totient is φ = 11077720066.

The previous prime is 22155440129. The next prime is 22155440141. The reversal of 22155440134 is 43104455122.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 22155440096 and 22155440105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5538860032 + ... + 5538860035.

It is an arithmetic number, because the mean of its divisors is an integer number (8308290051).

Almost surely, 2^22155440134 is an apocalyptic number.

22155440134 is a deficient number, since it is larger than the sum of its proper divisors (11077720070).

22155440134 is a wasteful number, since it uses less digits than its factorization.

22155440134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077720069.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 22155440134 its reverse (43104455122), we get a palindrome (65259895256).

The spelling of 22155440134 in words is "twenty-two billion, one hundred fifty-five million, four hundred forty thousand, one hundred thirty-four".