201321121033 has 8 divisors (see below), whose sum is σ = 203112392328. Its totient is φ = 199530019584.

The previous prime is 201321121019. The next prime is 201321121049. The reversal of 201321121033 is 330121123102.

It can be written as a sum of positive squares in 4 ways, for example, as 89927289 + 201231193744 = 9483^2 + 448588^2 .

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 201321121033 - 2³³ = 192731186441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201321121033.

It is not an unprimeable number, because it can be changed into a prime (201321121333) 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, 4308391 + ... + 4354867.

It is an arithmetic number, because the mean of its divisors is an integer number (25389049041).

Almost surely, 2^201321121033 is an apocalyptic number.

It is an amenable number.

201321121033 is a deficient number, since it is larger than the sum of its proper divisors (1791271295).

201321121033 is a wasteful number, since it uses less digits than its factorization.

201321121033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84923.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201321121033 its reverse (330121123102), we get a palindrome (531442244135).

The spelling of 201321121033 in words is "two hundred one billion, three hundred twenty-one million, one hundred twenty-one thousand, thirty-three".