2134220123 has 4 divisors (see below), whose sum is σ = 2439108720. Its totient is φ = 1829331528.

The previous prime is 2134220111. The next prime is 2134220147. The reversal of 2134220123 is 3210224312.

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 2134220123 - 2⁴ = 2134220107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2134220095 and 2134220104.

It is not an unprimeable number, because it can be changed into a prime (2134220183) 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, 152444288 + ... + 152444301.

It is an arithmetic number, because the mean of its divisors is an integer number (609777180).

Almost surely, 2^2134220123 is an apocalyptic number.

2134220123 is a deficient number, since it is larger than the sum of its proper divisors (304888597).

2134220123 is an equidigital number, since it uses as much as digits as its factorization.

2134220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304888596.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2134220123 is about 46197.6203175012. The cubic root of 2134220123 is about 1287.4975268498.

Adding to 2134220123 its reverse (3210224312), we get a palindrome (5344444435).

The spelling of 2134220123 in words is "two billion, one hundred thirty-four million, two hundred twenty thousand, one hundred twenty-three".