2112155103 has 4 divisors (see below), whose sum is σ = 2816206808. Its totient is φ = 1408103400.

The previous prime is 2112155081. The next prime is 2112155119. The reversal of 2112155103 is 3015512112.

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

It is not a de Polignac number, because 2112155103 - 2¹² = 2112151007 is a prime.

It is a super-2 number, since 2×2112155103² = 8922398358257881218, which contains 22 as substring.

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 2112155103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112155153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352025848 + ... + 352025853.

It is an arithmetic number, because the mean of its divisors is an integer number (704051702).

Almost surely, 2^2112155103 is an apocalyptic number.

2112155103 is a deficient number, since it is larger than the sum of its proper divisors (704051705).

2112155103 is an equidigital number, since it uses as much as digits as its factorization.

2112155103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704051704.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2112155103 is about 45958.1886392403. The cubic root of 2112155103 is about 1283.0451389440.

Adding to 2112155103 its reverse (3015512112), we get a palindrome (5127667215).

The spelling of 2112155103 in words is "two billion, one hundred twelve million, one hundred fifty-five thousand, one hundred three".