2121421234303 has 4 divisors (see below), whose sum is σ = 2424481410640. Its totient is φ = 1818361057968.

The previous prime is 2121421234267. The next prime is 2121421234327. The reversal of 2121421234303 is 3034321241212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2121421234303 - 2³⁷ = 1983982280831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121421234393) 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, 151530088158 + ... + 151530088171.

It is an arithmetic number, because the mean of its divisors is an integer number (606120352660).

Almost surely, 2^{2121421234303} is an apocalyptic number.

2121421234303 is a deficient number, since it is larger than the sum of its proper divisors (303060176337).

2121421234303 is an equidigital number, since it uses as much as digits as its factorization.

2121421234303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303060176336.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2121421234303 its reverse (3034321241212), we get a palindrome (5155742475515).

The spelling of 2121421234303 in words is "two trillion, one hundred twenty-one billion, four hundred twenty-one million, two hundred thirty-four thousand, three hundred three".