22105011155 has 8 divisors (see below), whose sum is σ = 26526824784. Its totient is φ = 17683468000.

The previous prime is 22105011151. The next prime is 22105011169. The reversal of 22105011155 is 55111050122.

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

It is not a de Polignac number, because 22105011155 - 2² = 22105011151 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 22105011155.

It is not an unprimeable number, because it can be changed into a prime (22105011151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236705 + ... + 316605.

It is an arithmetic number, because the mean of its divisors is an integer number (3315853098).

Almost surely, 2^22105011155 is an apocalyptic number.

22105011155 is a deficient number, since it is larger than the sum of its proper divisors (4421813629).

22105011155 is an equidigital number, since it uses as much as digits as its factorization.

22105011155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135237.

The product of its (nonzero) digits is 500, while the sum is 23.

Adding to 22105011155 its reverse (55111050122), we get a palindrome (77216061277).

The spelling of 22105011155 in words is "twenty-two billion, one hundred five million, eleven thousand, one hundred fifty-five".