21212002111067 has 2 divisors, whose sum is σ = 21212002111068. Its totient is φ = 21212002111066.

The previous prime is 21212002111051. The next prime is 21212002111081. The reversal of 21212002111067 is 76011120021212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21212002111067 - 2⁴ = 21212002111051 is a prime.

It is not a weakly prime, because it can be changed into another prime (21212002111007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606001055533 + 10606001055534.

It is an arithmetic number, because the mean of its divisors is an integer number (10606001055534).

Almost surely, 2^{21212002111067} is an apocalyptic number.

21212002111067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212002111067 is an equidigital number, since it uses as much as digits as its factorization.

21212002111067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 21212002111067 its reverse (76011120021212), we get a palindrome (97223122132279).

The spelling of 21212002111067 in words is "twenty-one trillion, two hundred twelve billion, two million, one hundred eleven thousand, sixty-seven".