2123121134 has 8 divisors (see below), whose sum is σ = 3185295960. Its totient is φ = 1061355816.

The previous prime is 2123121107. The next prime is 2123121137. The reversal of 2123121134 is 4311213212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123121137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89069 + ... + 110360.

It is an arithmetic number, because the mean of its divisors is an integer number (398161995).

Almost surely, 2^2123121134 is an apocalyptic number.

2123121134 is a deficient number, since it is larger than the sum of its proper divisors (1062174826).

2123121134 is a wasteful number, since it uses less digits than its factorization.

2123121134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204754.

The product of its digits is 288, while the sum is 20.

The square root of 2123121134 is about 46077.3386167213. The cubic root of 2123121134 is about 1285.2617743019.

Adding to 2123121134 its reverse (4311213212), we get a palindrome (6434334346).

The spelling of 2123121134 in words is "two billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred thirty-four".