21213233321302 has 24 divisors (see below), whose sum is σ = 35497560559608. Its totient is φ = 9498462673920.

The previous prime is 21213233321237. The next prime is 21213233321321. The reversal of 21213233321302 is 20312333231212.

It is a happy number.

It is a super-3 number, since 3×21213233321302³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 654147883 + ... + 654180310.

It is an arithmetic number, because the mean of its divisors is an integer number (1479065023317).

Almost surely, 2^{21213233321302} is an apocalyptic number.

21213233321302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21213233321302 is a deficient number, since it is larger than the sum of its proper divisors (14284327238306).

21213233321302 is a wasteful number, since it uses less digits than its factorization.

21213233321302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308328284 (or 1308328273 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21213233321302 its reverse (20312333231212), we get a palindrome (41525566552514).

The spelling of 21213233321302 in words is "twenty-one trillion, two hundred thirteen billion, two hundred thirty-three million, three hundred twenty-one thousand, three hundred two".