111202101121211 has 2 divisors, whose sum is σ = 111202101121212. Its totient is φ = 111202101121210.

The previous prime is 111202101121157. The next prime is 111202101121213. The reversal of 111202101121211 is 112121101202111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111202101121211 - 2¹⁴ = 111202101104827 is a prime.

Together with 111202101121213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111202101121211.

It is not a weakly prime, because it can be changed into another prime (111202101121213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601050560605 + 55601050560606.

It is an arithmetic number, because the mean of its divisors is an integer number (55601050560606).

Almost surely, 2^{111202101121211} is an apocalyptic number.

111202101121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202101121211 is an equidigital number, since it uses as much as digits as its factorization.

111202101121211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111202101121211 its reverse (112121101202111), we get a palindrome (223323202323322).

The spelling of 111202101121211 in words is "one hundred eleven trillion, two hundred two billion, one hundred one million, one hundred twenty-one thousand, two hundred eleven".