213121313021033 has 8 divisors (see below), whose sum is σ = 214227694848648. Its totient is φ = 212014953114624.

The previous prime is 213121313020991. The next prime is 213121313021047. The reversal of 213121313021033 is 330120313121312.

It can be written as a sum of positive squares in 4 ways, for example, as 48401337809449 + 164719975211584 = 6957107^2 + 12834328^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213121313021033 - 2³⁰ = 213120239279209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213121313020993 and 213121313021011.

It is not an unprimeable number, because it can be changed into a prime (213121313021233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14197391 + ... + 25056107.

It is an arithmetic number, because the mean of its divisors is an integer number (26778461856081).

Almost surely, 2^{213121313021033} is an apocalyptic number.

It is an amenable number.

213121313021033 is a deficient number, since it is larger than the sum of its proper divisors (1106381827615).

213121313021033 is a wasteful number, since it uses less digits than its factorization.

213121313021033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10960603.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 213121313021033 its reverse (330120313121312), we get a palindrome (543241626142345).

The spelling of 213121313021033 in words is "two hundred thirteen trillion, one hundred twenty-one billion, three hundred thirteen million, twenty-one thousand, thirty-three".