21201112011067 has 2 divisors, whose sum is σ = 21201112011068. Its totient is φ = 21201112011066.

The previous prime is 21201112010989. The next prime is 21201112011071. The reversal of 21201112011067 is 76011021110212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21201112011067 is a prime.

It is not a weakly prime, because it can be changed into another prime (21201112411067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600556005533 + 10600556005534.

It is an arithmetic number, because the mean of its divisors is an integer number (10600556005534).

Almost surely, 2^{21201112011067} is an apocalyptic number.

21201112011067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201112011067 is an equidigital number, since it uses as much as digits as its factorization.

21201112011067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

Adding to 21201112011067 its reverse (76011021110212), we get a palindrome (97212133121279).

The spelling of 21201112011067 in words is "twenty-one trillion, two hundred one billion, one hundred twelve million, eleven thousand, sixty-seven".