21203132330331 has 12 divisors (see below), whose sum is σ = 35001996227952. Its totient is φ = 12116075617296.

The previous prime is 21203132330323. The next prime is 21203132330333. The reversal of 21203132330331 is 13303323130212.

21203132330331 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 3 + 1 + 323 + 3 + 0 + 331 = 666.

It is not a de Polignac number, because 21203132330331 - 2³ = 21203132330323 is a prime.

It is a super-2 number, since 2×21203132330331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21203132330295 and 21203132330304.

It is not an unprimeable number, because it can be changed into a prime (21203132330333) 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, 168278827956 + ... + 168278828081.

It is an arithmetic number, because the mean of its divisors is an integer number (2916833018996).

Almost surely, 2^{21203132330331} is an apocalyptic number.

21203132330331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21203132330331 is a deficient number, since it is larger than the sum of its proper divisors (13798863897621).

21203132330331 is a wasteful number, since it uses less digits than its factorization.

21203132330331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336557656050 (or 336557656047 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21203132330331 its reverse (13303323130212), we get a palindrome (34506455460543).

The spelling of 21203132330331 in words is "twenty-one trillion, two hundred three billion, one hundred thirty-two million, three hundred thirty thousand, three hundred thirty-one".