21333312302 has 4 divisors (see below), whose sum is σ = 31999968456. Its totient is φ = 10666656150.

The previous prime is 21333312293. The next prime is 21333312367. The reversal of 21333312302 is 20321333312.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21333312302² (a number of 21 digits) contains 22 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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333328074 + ... + 5333328077.

It is an arithmetic number, because the mean of its divisors is an integer number (7999992114).

Almost surely, 2^21333312302 is an apocalyptic number.

21333312302 is a deficient number, since it is larger than the sum of its proper divisors (10666656154).

21333312302 is a wasteful number, since it uses less digits than its factorization.

21333312302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10666656153.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21333312302 its reverse (20321333312), we get a palindrome (41654645614).

The spelling of 21333312302 in words is "twenty-one billion, three hundred thirty-three million, three hundred twelve thousand, three hundred two".