2121003144347 has 2 divisors, whose sum is σ = 2121003144348. Its totient is φ = 2121003144346.

The previous prime is 2121003144343. The next prime is 2121003144361. The reversal of 2121003144347 is 7434413001212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121003144347 - 2² = 2121003144343 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121003144343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060501572173 + 1060501572174.

It is an arithmetic number, because the mean of its divisors is an integer number (1060501572174).

Almost surely, 2^{2121003144347} is an apocalyptic number.

2121003144347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121003144347 is an equidigital number, since it uses as much as digits as its factorization.

2121003144347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 2121003144347 its reverse (7434413001212), we get a palindrome (9555416145559).

The spelling of 2121003144347 in words is "two trillion, one hundred twenty-one billion, three million, one hundred forty-four thousand, three hundred forty-seven".