21212100011303 has 8 divisors (see below), whose sum is σ = 21221493871200. Its totient is φ = 21202708220928.

The previous prime is 21212100011281. The next prime is 21212100011321. The reversal of 21212100011303 is 30311000121212.

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

It is a cyclic number.

It is not a de Polignac number, because 21212100011303 - 2³⁰ = 21211026269479 is a prime.

It is a super-3 number, since 3×21212100011303³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212100011363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20169350 + ... + 21194972.

It is an arithmetic number, because the mean of its divisors is an integer number (2652686733900).

Almost surely, 2^{21212100011303} is an apocalyptic number.

21212100011303 is a deficient number, since it is larger than the sum of its proper divisors (9393859897).

21212100011303 is a wasteful number, since it uses less digits than its factorization.

21212100011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034761.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21212100011303 its reverse (30311000121212), we get a palindrome (51523100132515).

The spelling of 21212100011303 in words is "twenty-one trillion, two hundred twelve billion, one hundred million, eleven thousand, three hundred three".