21212014333 has 32 divisors (see below), whose sum is σ = 23915485440. Its totient is φ = 18695577600.

The previous prime is 21212014297. The next prime is 21212014349. The reversal of 21212014333 is 33341021212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21212014333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212014633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21935416 + ... + 21936382.

It is an arithmetic number, because the mean of its divisors is an integer number (747358920).

Almost surely, 2^21212014333 is an apocalyptic number.

It is an amenable number.

21212014333 is a deficient number, since it is larger than the sum of its proper divisors (2703471107).

21212014333 is a wasteful number, since it uses less digits than its factorization.

21212014333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21212014333 its reverse (33341021212), we get a palindrome (54553035545).

The spelling of 21212014333 in words is "twenty-one billion, two hundred twelve million, fourteen thousand, three hundred thirty-three".