2121214343 has 4 divisors (see below), whose sum is σ = 2121375600. Its totient is φ = 2121053088.

The previous prime is 2121214301. The next prime is 2121214349. The reversal of 2121214343 is 3434121212.

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 2121214343 - 2²⁶ = 2054105479 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121214349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58955 + ... + 87852.

It is an arithmetic number, because the mean of its divisors is an integer number (530343900).

Almost surely, 2^2121214343 is an apocalyptic number.

2121214343 is a deficient number, since it is larger than the sum of its proper divisors (161257).

2121214343 is a wasteful number, since it uses less digits than its factorization.

2121214343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161256.

The product of its digits is 1152, while the sum is 23.

The square root of 2121214343 is about 46056.6427673577. The cubic root of 2121214343 is about 1284.8768913133.

Adding to 2121214343 its reverse (3434121212), we get a palindrome (5555335555).

The spelling of 2121214343 in words is "two billion, one hundred twenty-one million, two hundred fourteen thousand, three hundred forty-three".