21213033302 has 8 divisors (see below), whose sum is σ = 31820175000. Its totient is φ = 10606308304.

The previous prime is 21213033301. The next prime is 21213033323. The reversal of 21213033302 is 20333031212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21213033302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213033301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 117074 + ... + 236922.

It is an arithmetic number, because the mean of its divisors is an integer number (3977521875).

Almost surely, 2^21213033302 is an apocalyptic number.

21213033302 is a deficient number, since it is larger than the sum of its proper divisors (10607141698).

21213033302 is a wasteful number, since it uses less digits than its factorization.

21213033302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208350.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21213033302 its reverse (20333031212), we get a palindrome (41546064514).

The spelling of 21213033302 in words is "twenty-one billion, two hundred thirteen million, thirty-three thousand, three hundred two".