12201000011111 has 2 divisors, whose sum is σ = 12201000011112. Its totient is φ = 12201000011110.

The previous prime is 12201000011033. The next prime is 12201000011113. The reversal of 12201000011111 is 11111000010221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12201000011111 - 2³⁸ = 11926122104167 is a prime.

It is a super-2 number, since 2×12201000011111² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 12201000011113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201000011092 and 12201000011101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201000011113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100500005555 + 6100500005556.

It is an arithmetic number, because the mean of its divisors is an integer number (6100500005556).

Almost surely, 2^{12201000011111} is an apocalyptic number.

12201000011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201000011111 is an equidigital number, since it uses as much as digits as its factorization.

12201000011111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12201000011111 its reverse (11111000010221), we get a palindrome (23312000021332).

The spelling of 12201000011111 in words is "twelve trillion, two hundred one billion, eleven thousand, one hundred eleven".