2021334434401 has 4 divisors (see below), whose sum is σ = 2140236459972. Its totient is φ = 1902432408832.

The previous prime is 2021334434387. The next prime is 2021334434419. The reversal of 2021334434401 is 1044344331202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 658371582801 + 1362962851600 = 811401^2 + 1167460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021334434401 - 2¹¹ = 2021334432353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021334434501) 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, 59451012760 + ... + 59451012793.

It is an arithmetic number, because the mean of its divisors is an integer number (535059114993).

Almost surely, 2^{2021334434401} is an apocalyptic number.

It is an amenable number.

2021334434401 is a deficient number, since it is larger than the sum of its proper divisors (118902025571).

2021334434401 is a wasteful number, since it uses less digits than its factorization.

2021334434401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118902025570.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 2021334434401 its reverse (1044344331202), we get a palindrome (3065678765603).

The spelling of 2021334434401 in words is "two trillion, twenty-one billion, three hundred thirty-four million, four hundred thirty-four thousand, four hundred one".