12344421342021 has 16 divisors (see below), whose sum is σ = 17026918459200. Its totient is φ = 7945773573248.

The previous prime is 12344421342013. The next prime is 12344421342049. The reversal of 12344421342021 is 12024312444321.

12344421342021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12344421342021 - 2³ = 12344421342013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344421343021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12736450 + ... + 13671356.

It is an arithmetic number, because the mean of its divisors is an integer number (1064182403700).

Almost surely, 2^{12344421342021} is an apocalyptic number.

It is an amenable number.

12344421342021 is a deficient number, since it is larger than the sum of its proper divisors (4682497117179).

12344421342021 is a wasteful number, since it uses less digits than its factorization.

12344421342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086708.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 12344421342021 its reverse (12024312444321), we get a palindrome (24368733786342).

The spelling of 12344421342021 in words is "twelve trillion, three hundred forty-four billion, four hundred twenty-one million, three hundred forty-two thousand, twenty-one".