2123342121 has 8 divisors (see below), whose sum is σ = 2832127264. Its totient is φ = 1415059200.

The previous prime is 2123342119. The next prime is 2123342141. The reversal of 2123342121 is 1212433212.

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

It is not a de Polignac number, because 2123342121 - 2¹ = 2123342119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123342101) 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 7 ways as a sum of consecutive naturals, for example, 115576 + ... + 132681.

It is an arithmetic number, because the mean of its divisors is an integer number (354015908).

Almost surely, 2^2123342121 is an apocalyptic number.

It is an amenable number.

2123342121 is a deficient number, since it is larger than the sum of its proper divisors (708785143).

2123342121 is a wasteful number, since it uses less digits than its factorization.

2123342121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251111.

The product of its digits is 576, while the sum is 21.

The square root of 2123342121 is about 46079.7365552365. The cubic root of 2123342121 is about 1285.3063653030.

Adding to 2123342121 its reverse (1212433212), we get a palindrome (3335775333).

The spelling of 2123342121 in words is "two billion, one hundred twenty-three million, three hundred forty-two thousand, one hundred twenty-one".