2121343132043 has 4 divisors (see below), whose sum is σ = 2121387101400. Its totient is φ = 2121299162688.

The previous prime is 2121343132019. The next prime is 2121343132049. The reversal of 2121343132043 is 3402313431212.

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 2121343132043 - 2²⁰ = 2121342083467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121343131997 and 2121343132015.

It is not an unprimeable number, because it can be changed into a prime (2121343132049) 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, 21912230 + ... + 22008827.

It is an arithmetic number, because the mean of its divisors is an integer number (530346775350).

Almost surely, 2^{2121343132043} is an apocalyptic number.

2121343132043 is a deficient number, since it is larger than the sum of its proper divisors (43969357).

2121343132043 is an equidigital number, since it uses as much as digits as its factorization.

2121343132043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43969356.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 2121343132043 its reverse (3402313431212), we get a palindrome (5523656563255).

The spelling of 2121343132043 in words is "two trillion, one hundred twenty-one billion, three hundred forty-three million, one hundred thirty-two thousand, forty-three".