21012014333 has 2 divisors, whose sum is σ = 21012014334. Its totient is φ = 21012014332.

The previous prime is 21012014209. The next prime is 21012014339. The reversal of 21012014333 is 33341021012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20863491364 + 148522969 = 144442^2 + 12187^2 .

It is a cyclic number.

It is not a de Polignac number, because 21012014333 - 2⁸ = 21012014077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21012014339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506007166 + 10506007167.

It is an arithmetic number, because the mean of its divisors is an integer number (10506007167).

Almost surely, 2^21012014333 is an apocalyptic number.

It is an amenable number.

21012014333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012014333 is an equidigital number, since it uses as much as digits as its factorization.

21012014333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21012014333 its reverse (33341021012), we get a palindrome (54353035345).

The spelling of 21012014333 in words is "twenty-one billion, twelve million, fourteen thousand, three hundred thirty-three".