203030202202321 has 12 divisors (see below), whose sum is σ = 219902466593628. Its totient is φ = 187367148306624.

The previous prime is 203030202202283. The next prime is 203030202202327. The reversal of 203030202202321 is 123202202030302.

203030202202321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 67639291424721 + 135390910777600 = 8224311^2 + 11635760^2 .

It is a de Polignac number, because none of the positive numbers 2^k-203030202202321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203030202202292 and 203030202202301.

It is not an unprimeable number, because it can be changed into a prime (203030202202327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144639310 + ... + 146036263.

It is an arithmetic number, because the mean of its divisors is an integer number (18325205549469).

Almost surely, 2^{203030202202321} is an apocalyptic number.

It is an amenable number.

203030202202321 is a deficient number, since it is larger than the sum of its proper divisors (16872264391307).

203030202202321 is a wasteful number, since it uses less digits than its factorization.

203030202202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290679732 (or 290679719 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 203030202202321 its reverse (123202202030302), we get a palindrome (326232404232623).

The spelling of 203030202202321 in words is "two hundred three trillion, thirty billion, two hundred two million, two hundred two thousand, three hundred twenty-one".