21330221202 has 12 divisors (see below), whose sum is σ = 46215479310. Its totient is φ = 7110073728.

The previous prime is 21330221191. The next prime is 21330221287. The reversal of 21330221202 is 20212203312.

21330221202 is a `hidden beast` number, since 213 + 30 + 221 + 202 = 666.

21330221202 is digitally balanced in base 5, 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 only one way, i.e., 14108450841 + 7221770361 = 118779^2 + 84981^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1185012289 = 21330221202 / (2 + 1 + 3 + 3 + 0 + 2 + 2 + 1 + 2 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592506127 + ... + 592506162.

Almost surely, 2^21330221202 is an apocalyptic number.

21330221202 is an abundant number, since it is smaller than the sum of its proper divisors (24885258108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21330221202 is a wasteful number, since it uses less digits than its factorization.

21330221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185012297 (or 1185012294 counting only the distinct ones).

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

Adding to 21330221202 its reverse (20212203312), we get a palindrome (41542424514).

The spelling of 21330221202 in words is "twenty-one billion, three hundred thirty million, two hundred twenty-one thousand, two hundred two".