1211000122099 has 2 divisors, whose sum is σ = 1211000122100. Its totient is φ = 1211000122098.

The previous prime is 1211000122097. The next prime is 1211000122121. The reversal of 1211000122099 is 9902210001121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9902210001121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211000122099 - 2¹ = 1211000122097 is a prime.

Together with 1211000122097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1211000122097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500061049 + 605500061050.

It is an arithmetic number, because the mean of its divisors is an integer number (605500061050).

Almost surely, 2^{1211000122099} is an apocalyptic number.

1211000122099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211000122099 is an equidigital number, since it uses as much as digits as its factorization.

1211000122099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 1211000122099 in words is "one trillion, two hundred eleven billion, one hundred twenty-two thousand, ninety-nine".