20203002012321 has 12 divisors (see below), whose sum is σ = 29182182574740. Its totient is φ = 13468636366560.

The previous prime is 20203002012313. The next prime is 20203002012407. The reversal of 20203002012321 is 12321020030202.

20203002012321 is a `hidden beast` number, since 2 + 0 + 20 + 300 + 20 + 1 + 2 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14192850675600 + 6010151336721 = 3767340^2 + 2451561^2 .

It is not a de Polignac number, because 20203002012321 - 2³ = 20203002012313 is a prime.

It is a super-2 number, since 2×20203002012321² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20203002012294 and 20203002012303.

It is not an unprimeable number, because it can be changed into a prime (20203002012421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1799895 + ... + 6606483.

It is an arithmetic number, because the mean of its divisors is an integer number (2431848547895).

Almost surely, 2^{20203002012321} is an apocalyptic number.

It is an amenable number.

20203002012321 is a deficient number, since it is larger than the sum of its proper divisors (8979180562419).

20203002012321 is a wasteful number, since it uses less digits than its factorization.

20203002012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273616 (or 5273613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20203002012321 its reverse (12321020030202), we get a palindrome (32524022042523).

The spelling of 20203002012321 in words is "twenty trillion, two hundred three billion, two million, twelve thousand, three hundred twenty-one".