2121211112099 has 2 divisors, whose sum is σ = 2121211112100. Its totient is φ = 2121211112098.

The previous prime is 2121211112039. The next prime is 2121211112101. The reversal of 2121211112099 is 9902111121212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121211112099 is a prime.

Together with 2121211112101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2121211112039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060605556049 + 1060605556050.

It is an arithmetic number, because the mean of its divisors is an integer number (1060605556050).

Almost surely, 2^{2121211112099} is an apocalyptic number.

2121211112099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121211112099 is an equidigital number, since it uses as much as digits as its factorization.

2121211112099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 2121211112099 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, ninety-nine".