2103222155 has 4 divisors (see below), whose sum is σ = 2523866592. Its totient is φ = 1682577720.

The previous prime is 2103222151. The next prime is 2103222179. The reversal of 2103222155 is 5512223012.

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

It is not a de Polignac number, because 2103222155 - 2² = 2103222151 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 2103222155.

It is not an unprimeable number, because it can be changed into a prime (2103222151) 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, 210322211 + ... + 210322220.

It is an arithmetic number, because the mean of its divisors is an integer number (630966648).

Almost surely, 2^2103222155 is an apocalyptic number.

2103222155 is a deficient number, since it is larger than the sum of its proper divisors (420644437).

2103222155 is an equidigital number, since it uses as much as digits as its factorization.

2103222155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420644436.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2103222155 is about 45860.9000674867. The cubic root of 2103222155 is about 1281.2337865725.

Adding to 2103222155 its reverse (5512223012), we get a palindrome (7615445167).

The spelling of 2103222155 in words is "two billion, one hundred three million, two hundred twenty-two thousand, one hundred fifty-five".