2121335424413 has 6 divisors (see below), whose sum is σ = 2180218366746. Its totient is φ = 2064002033232.

The previous prime is 2121335424331. The next prime is 2121335424421. The reversal of 2121335424413 is 3144245331212.

It can be written as a sum of positive squares in 3 ways, for example, as 1703343434884 + 417991989529 = 1305122^2 + 646523^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2121335424413 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 (2121335424463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 774774170 + ... + 774776907.

It is an arithmetic number, because the mean of its divisors is an integer number (363369727791).

Almost surely, 2^{2121335424413} is an apocalyptic number.

It is an amenable number.

2121335424413 is a deficient number, since it is larger than the sum of its proper divisors (58882942333).

2121335424413 is an equidigital number, since it uses as much as digits as its factorization.

2121335424413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549551151 (or 1549551114 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The spelling of 2121335424413 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-five million, four hundred twenty-four thousand, four hundred thirteen".