21210200011967 has 2 divisors, whose sum is σ = 21210200011968. Its totient is φ = 21210200011966.

The previous prime is 21210200011939. The next prime is 21210200012093. The reversal of 21210200011967 is 76911000201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21210200011967 - 2¹⁶ = 21210199946431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210200011907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605100005983 + 10605100005984.

It is an arithmetic number, because the mean of its divisors is an integer number (10605100005984).

Almost surely, 2^{21210200011967} is an apocalyptic number.

21210200011967 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210200011967 is an equidigital number, since it uses as much as digits as its factorization.

21210200011967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 21210200011967 in words is "twenty-one trillion, two hundred ten billion, two hundred million, eleven thousand, nine hundred sixty-seven".