21210300222233 has 16 divisors (see below), whose sum is σ = 21547967293440. Its totient is φ = 20875131340800.

The previous prime is 21210300222229. The next prime is 21210300222289. The reversal of 21210300222233 is 33222200301212.

It is a cyclic number.

It is not a de Polignac number, because 21210300222233 - 2² = 21210300222229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21210300222199 and 21210300222208.

It is not an unprimeable number, because it can be changed into a prime (21210300222733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58940273 + ... + 59299041.

It is an arithmetic number, because the mean of its divisors is an integer number (1346747955840).

Almost surely, 2^{21210300222233} is an apocalyptic number.

It is an amenable number.

21210300222233 is a deficient number, since it is larger than the sum of its proper divisors (337667071207).

21210300222233 is a wasteful number, since it uses less digits than its factorization.

21210300222233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362248.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21210300222233 its reverse (33222200301212), we get a palindrome (54432500523445).

The spelling of 21210300222233 in words is "twenty-one trillion, two hundred ten billion, three hundred million, two hundred twenty-two thousand, two hundred thirty-three".