121111211011099 has 2 divisors, whose sum is σ = 121111211011100. Its totient is φ = 121111211011098.

The previous prime is 121111211010971. The next prime is 121111211011103. The reversal of 121111211011099 is 990110112111121.

It is a strong prime.

It is an emirp because it is prime and its reverse (990110112111121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121111211011099 - 2⁷ = 121111211010971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121111211011099.

It is not a weakly prime, because it can be changed into another prime (121111211018099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555605505549 + 60555605505550.

It is an arithmetic number, because the mean of its divisors is an integer number (60555605505550).

Almost surely, 2^{121111211011099} is an apocalyptic number.

121111211011099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111211011099 is an equidigital number, since it uses as much as digits as its factorization.

121111211011099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 31.

The spelling of 121111211011099 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred eleven million, eleven thousand, ninety-nine".