22145221103 has 4 divisors (see below), whose sum is σ = 22146241320. Its totient is φ = 22144200888.

The previous prime is 22145221097. The next prime is 22145221151. The reversal of 22145221103 is 30112254122.

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

It is a cyclic number.

It is not a de Polignac number, because 22145221103 - 2¹⁸ = 22144958959 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 (22145221603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476825 + ... + 521202.

It is an arithmetic number, because the mean of its divisors is an integer number (5536560330).

Almost surely, 2^22145221103 is an apocalyptic number.

22145221103 is a deficient number, since it is larger than the sum of its proper divisors (1020217).

22145221103 is an equidigital number, since it uses as much as digits as its factorization.

22145221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020216.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 22145221103 its reverse (30112254122), we get a palindrome (52257475225).

The spelling of 22145221103 in words is "twenty-two billion, one hundred forty-five million, two hundred twenty-one thousand, one hundred three".