20033010121321 has 6 divisors (see below), whose sum is σ = 20289802438122. Its totient is φ = 19779427708560.

The previous prime is 20033010121277. The next prime is 20033010121331. The reversal of 20033010121321 is 12312101033002.

It can be written as a sum of positive squares in only one way, i.e., 16163527711321 + 3869482410000 = 4020389^2 + 1967100^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20033010121321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20033010121331) 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, 1604945700 + ... + 1604958181.

It is an arithmetic number, because the mean of its divisors is an integer number (3381633739687).

Almost surely, 2^{20033010121321} is an apocalyptic number.

It is an amenable number.

20033010121321 is a deficient number, since it is larger than the sum of its proper divisors (256792316801).

20033010121321 is an frugal number, since it uses more digits than its factorization.

20033010121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209904039 (or 3209903960 counting only the distinct ones).

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

Adding to 20033010121321 its reverse (12312101033002), we get a palindrome (32345111154323).

The spelling of 20033010121321 in words is "twenty trillion, thirty-three billion, ten million, one hundred twenty-one thousand, three hundred twenty-one".