21214030333 has 2 divisors, whose sum is σ = 21214030334. Its totient is φ = 21214030332.

The previous prime is 21214030283. The next prime is 21214030337. The reversal of 21214030333 is 33303041212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21005574489 + 208455844 = 144933^2 + 14438^2 .

It is a cyclic number.

It is not a de Polignac number, because 21214030333 - 2³³ = 12624095741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214030337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607015166 + 10607015167.

It is an arithmetic number, because the mean of its divisors is an integer number (10607015167).

Almost surely, 2^21214030333 is an apocalyptic number.

It is an amenable number.

21214030333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214030333 is an equidigital number, since it uses as much as digits as its factorization.

21214030333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21214030333 its reverse (33303041212), we get a palindrome (54517071545).

The spelling of 21214030333 in words is "twenty-one billion, two hundred fourteen million, thirty thousand, three hundred thirty-three".